1 / 5

Proportions

Proportions. A proportion is an equation that states two ratios are equal. Ratios: 6 to 8 and 9 to 12 Proportion 6 = 9 8 12 The cross product of proportions are always equal For instance 6 x 12 = 72 and 8 x 9 = 72. Ratios: 5: 9 and 15: 27 Proportion

nnunn
Download Presentation

Proportions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Proportions A proportion is an equation that states two ratios are equal

  2. Ratios: 6 to 8 and 9 to 12 Proportion 6 = 9 8 12 The cross product of proportions are always equal For instance 6 x 12 = 72 and 8 x 9 = 72

  3. Ratios: 5: 9 and 15: 27 Proportion 5 = 15 9 27 The cross product of proportions are always equal For instance 5 x 27 = 135 and 9 x 15 = 135

  4. Which pairs could form a proportion? 3 = 6 8 16 6 = 4 9 6 4 = 5 8 9 8 x 6 = 48 3 x 16 = 48 YES 6 x 6 = 36 4 x 9 = 36 YES 4 x 9 = 36 5 x 8 = 40 NO

  5. 25 = x 35 7 35 x = 175 X = 5 N = 20 15 50 50n = 300 N = 6 Solving Proportions: cross multiply 3.6 = n 200 100 360 = 200n 1.8 = n

More Related