Ratios Proportional

Select ALL statements that support these two ratios being proportional.

• Both cross-products are 3960.

• The cross-products are 2640 and 5940.

• The cross-products are 2904 and 5400.

• The simplified ratios are 22/30 and 33/45.

• The simplified ratios are both 11/15.

Are the two ratios proportional?

• YES

• NO

For the proportion, what common product do you get when cross-multiplying?

• 148

• 167

• 112

• 224

Which of the following ratios would be proportional to 1/2?

• 6/8

• 2/5

• 9/18

• 5/10

• 4/12

Which of the following ratios would be proportional to 3/4? Select ALL that apply.

• 9/12

• 9/16

• 30/40

• 18/24

• 4/12

Which of the following ratios would be proportional to 4/10? Select ALL that apply.

• 6/15

• 9/15

• 8/40

• 44/55

• 2/5

Which of the following ratios would NOT be proportional to 7/8? Select ALL that apply.

• 14/24

• 28/32

• 35/40

• 49/64

• 700/800

What are two methods for determining whether two ratios are proportional? Make sure you select them BOTH.

• Simplifying

• Finding the reciprocal

• Finding the cross-products

• Adding them together

Select ALL statements that support these two ratios being NOT proportional.

• Both cross-products are 24.

• The cross-products are 18 and 32.

• The cross-products are 12 and 48.

• The simplified ratios are 3/8 and 2/3.

• The simplified ratios are both 2/3.

Which of the following ratios would NOT be proportional to 3/9? Select ALL that apply.

• 2/6

• 4/12

• 10/30

• 7/21

• 6/27