Download presentation

Presentation is loading. Please wait.

Published byJustin Hancock Modified over 4 years ago

2
Proportions A proportion is an equation with a ratio on each side. It is a statement that two ratios are equal. 3 = 6 is an example of a proportion. 4 8 (A ratio is a fraction.)

3
How can you tell if ratios are in proportion?

4
Tell whether the ratios are proportional. 4 10 6 15 Since the cross products are equal, the ratios are proportional. 60 = ? 60 = 60 Find cross products. 60 4 10 6 15

5
Tell whether the ratios are proportional. Since the cross products are equal, the ratios are proportional. 20 20 = 20 Find cross products. 20 2424 5 10 2424 5 10 = ?

6
Solving Proportions When you do not know one of the four numbers in a proportion, set the cross products equal to each other and solve.

7
Solve the Proportion 6p = 12 5 p = 10 6p = 60 Find the cross products. Solve. 5656 p 12 = ; the proportion checks. 5656 10 12 =

8
Solve the Proportion 14 3 = 2g 21 = g 42 = 2g Find the cross products. Solve. 2323 14 g = ; the proportion checks. 2323 14 21 =

Similar presentations

© 2019 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google