Ratios Cross Multiplying

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 4/10? Select ALL that apply.

• 6/15

• 9/15

• 8/40

• 44/55

• 2/5

Are the two ratios proportional?

• YES

• NO

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 NOT be proportional to 7/8? Select ALL that apply.

• 14/24

• 28/32

• 35/40

• 49/64

• 700/800

• A

• B

• C

• D

Hint: FISH to TOTAL PETS, and select all answers that are equivalent to that ratio.

• A

• B

• C

• D

• E

• A

• B

• C

• D

How can we determine if two ratios are equivalent?

• Simplify both ratios.

• Adding or subtracting by the same number.

• Multiplying or dividing by the same number.

• Cross multiply and see if the products are equal.