How do you find 2 missing numbers in equivalent fractions?

To find two missing numbers in equivalent fractions, you can set up an equation using the property that two fractions are equivalent if their cross products are equal. For instance, if you have the fractions ( \frac{a}{b} ) and ( \frac{c}{d} ), you can use the equation ( a \times d = b \times c ) to find the missing values. By substituting known values into this equation, you can solve for the unknowns. Additionally, you can also use a common multiplier or divisor to scale the fractions up or down to find the missing numbers.