# FIND MISSING QUANTITIES IN PROPORTION WORKSHEET

Solve for the unknown.

Problem 1 :

3 : n = 5 : 20

Solution

Problem 2 :

a : 42 = 5 : 6

Solution

Problem 3 :

50 : 75 = x : 1/2

Solution

Problem 4 :

7 : 3.5 = 21 : z

Solution

Problem 5 :

0.6 : g = 0.78 : 0.325

Solution

Problem 6 :

7/8 : 3/16 = t : 5/8

Solution

Use proportions to solve the following problems.

Problem 7 :

A box of 500 vitamin C tablets sells for \$4.80. How much would 125 tablets cost?

Solution

Problem 8 :

If you can open 12 cans of soup in 5 minutes, how many cans of soup could you open in 45 minutes?

Solution

Problem 9 :

A manufacturing plant can make 750 microwave ovens in 9 days. How large an order for microwave ovens can the plant fill in 33 days?

Solution

Problem 10 :

R. Habsburg has a three-fifths interest in a salt mining operation. He sold five-sevenths of his interest for \$4,500.

(a) What was the total amount of Habsburg's interest in the operation before selling?

(b) What is the total value of the salt mining operation?

Solution

1)  n = 12

2)  a = 35

3)  x = 1/3

4)  z = 10.5

5)  g = 0.25

6) t = 35/12

7)  n = \$1.2

8)  n = 108 cans of soup

9)  n = 2750 microwave ovens

10)  a) x = \$6300, x = \$10500

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