Solving Proportions with Cross Products

Solve the proportion below:

• 3

• 24

• 21

• 12

Solve the proportion:

• k=5

• k=3.3333333

• k=60

• k=90

Cross Multiply/Cross Products

• 75

• 28

• 36

• 24

Solve for x

• 1/2

• 25/8

• 11

• 53/4

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

• x = 10

• x = 1

• x = 12

• x = 11

• 3

• 4

• 5

• 6

• 8

• 10

• 12

• 14

• 7

• 14

• 21

• 28

Mathematical Equivalence

ON