Ratio, Proportion, And Percent Worksheet With Answers Page 2
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1
2
3
4
5
6pounds
4
10
=
Both ratios compare pounds to dollars.
dollars
5
x
You could also
An x is used for the missing term.
set up the
5 10=50
ratios using
First: Cross multiply.
dollars over
50 4=12.5, or $12.50
Next: Divide the cross product by the remaining term.
pounds. Try it.
The answer is
Answer: The company will charge $12.50 for a
the same.
10 = 50
5
10-pound shipment. Check: Substitute and cross multiply.
4
10
12.5 = 50
4
5
12.50
The proportion is true.
A calculator is very useful for solving proportion problems, especially when the numbers are
large. Enter the operations one after the other. You don’t have to write down and re-enter the
first cross product.
=
Calculator:
5
1
0
4
12.5
On the GED Math Test, you will sometimes be asked
A correct set-up for
the example above is:
to choose how a proportion problem could be set up.
5
10
The expression will show both the multiplication and the
4
division step. Remember, the fraction bar means division.
S K I L L P R A C T I C E
Solve each problem.
1.
Marti has created a logo for a T-shirt. Her
4.
For every $50 that Max earns, he saves $5.
sample design measures 6 inches wide and
Which expression could be used to find the
10 inches long. If she uses a photocopier to
amount he will save if he earns $300?
enlarge the design to a 10-inch width, what
300 + 5
50
5
(1)
(4)
will its length be to the nearest whole inch?
300
5
300
50
300
5
(2)
(5)
5
50
(1) 10
(4) 26
300
5
(3)
(2) 16
(5) 60
50
(3) 17
5.
Jonisa spent $34.14 for 3 gallons of paint.
Which expressions could be used to find
2.
A bread recipe calls for 6 cups of flour and
the cost of 7 gallons of the same paint?
3 tablespoons of butter. If John makes a
34.14 + 7
34.14
7
smaller batch using only 4 cups of flour, how
(1)
(4)
3
3
many tablespoons of butter will he need?
34.14
3
7
3
(2)
(5)
7
34.14
(1) 2
(4) 5
34.14
3
(3)
7
(2) 3
(5) 6
(3) 4
Answers and explanations start on page 315.
3.
Ken earned $218.75 for 25 hours of work.
At the same rate, how much would he
earn for 40 hours of work?
(1) $136.72
(4) $350.00
(2) $258.75
(5) $781.25
(3) $283.75
115
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