How can you determinate if two ratios are equivalent?

Answer 1

Multiply the antecedent of each ratio by the consequent of the other. If the products are equal, the ratios are equivalent.

For example, given the two ratios A:B and C:D, if the product of A and D equals the product of B and C, then A:B::C:D (A is to B as C is to D).


Two ratios a:b and c:d are equivalent if the crossproducts are the same.

That is a/b = c/d if and only if a*d = b*c.

Answer 2

Multiply the antecedent of each ratio by the consequent of the other. If the products are equal, the ratios are equivalent.

For example, given the two ratios A:B and C:D, if the product of A and D equals the product of B and C, then A:B::C:D (A is to B as C is to D).

Answer 3

Two ratios a:b and c:d are equivalent if the crossproducts are the same.

That is a/b = c/d if and only if a*d = b*c.