How can you show that two ratios are proportional?

There are 3 ways to show that ratios are proportional. Can you explain at least one way? Explain how.

1 answer

One way to show that two ratios are proportional is by cross multiplying.

If you have two ratios, for example, a/b and c/d, you can cross multiply by multiplying a and d, and b and c. If the two products are equal, then the ratios are proportional.

So if ad = bc, then the ratios a/b and c/d are proportional. This property can be used to prove that two ratios are proportional in various mathematical problems and calculations.