Proportions Cross Products

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

Solve the proportion below:

• 3

• 24

• 21

• 12

Solve the proportion below:

• 42

• 6

• 2

• 28

Solve the proportion below:

• 418

• 2

• 38

• 11

Two quantities are proportional if their ____ are equal

• numerators

• denominators

• cross products

• units

Do these ratios form a proportion?

If YES please also select the cross product.

• Yes, their cross products are equal.

• NO, their cross products are not equal.

• 20

• 40

Do these ratios form a proportion?

If YES please also select the cross product.

• Yes, their cross products are equal.

• NO, their cross products are not equal.

• 48

• 32

Jennifer babysat on Friday and made $96 in 8 hours. On Sunday, she babysat for 12 hours and made $144. Was the amount she earned each day proportional to the number of hours that she worked?

• Yes, the cross product is 1152.

• Yes, the cross product is 768.

• No, the cross products are not equal.

• Yes, the cross product is 1728.

There are 960 calories in 8 servings of Amy's cookies. There are 460 calories in 2 servings of Henry's cookies. Do the two rates form proportions?

• Yes, their cross product is 1920.

• Yes, their cross product is 3680.

• No, their cross products are not equal.

• Yes, their cross product is 7680.

Determine whether the ratios form a proportion:

• Proportional

• Not Proportional