Using cross product to verify a proportion

The video tutorial explains how to determine if two fractions form a proportion. It begins by defining a proportion as two equivalent fractions. The instructor demonstrates checking equivalence by comparing division results and using cross multiplication. The tutorial concludes that the given fractions do not form a proportion as they fail both equivalence checks.

What does it mean for two fractions to form a proportion?

• They have the same denominator.

• They are equivalent fractions.

• They are both improper fractions.

• They have the same numerator.

How can you determine if 16/15 and 4/3 are equivalent?

• By checking if both fractions are improper.

• By comparing their numerators.

• By dividing the numerators by the denominators.

• By checking if they have the same ratio.

What is the first step in cross multiplication?

• Subtract the denominators.

• Multiply across the fractions.

• Multiply the numerators.

• Add the numerators.

What result indicates that two fractions do not form a proportion when using cross multiplication?

• The cross products are equal.

• The cross products are not equal.

• The fractions have the same numerator.

• The fractions have the same denominator.

Why do 16/15 and 4/3 not form a proportion?

• They are both improper fractions.

• Their cross products are not equal.

• They have the same ratio.

• Their cross products are equal.