Fill the blanks with the correct words/phrase. Ratio is a comparison of (1)_____ equivalent is called a (2) _____quantities. An equation stating that two ratios are The (3)._____ and (5) _____extremes is (8)_____ and 4th terms in a proportion are called (4)_____ terms are called (6)._____ The (7) _____to the product of the means. while the 2nd of the Another method to determine whether each pair of ratios form a proportion is finding (9)_____ that is, finding the product of the means and product of the (10)_____​