Proportions Cross Product

Solve.

• b = 3

• b = 1/3

• b = 18

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

Solve the proportion:

• 3

• 4

• 9

• 6

Use cross products to solve for the value of n. Round your answer to the nearest tenth.
11/18 = 6/n

• n = 9.8

• n = 14.2

• n = 3.8

• n = 12.5

Use cross products to solve for the value of n. Round your answer to the nearest tenth.

2/16 = 15/n

• n = 120

• n = 18

• n = 16

• n = 100

Use cross products to solve for the value of n. Round your answer to the nearest tenth.
5/15 = 6/n

• n = 18

• n = 16

• n = 120

• n = 100

If the Cross Products are equal, then..................

• the two ratios are NOT proportional.

• the two ratios are proportional

What is the missing value of the proportion shown here?

• x = 16.5

• x = 17

• x = 17.5

• x = 18

Solve using cross products:
5/6 = x/12

• x = 10

• x = 1

• x = 12

• x = 11