Cross Multiplication Calculator Check if a/b = c/d. a b c d Equal? Yes a×d 24 b×c 24 Step-by-step with your numbers: 1. Values used: 2. a = 3 3. b = 4 4. c = 6 5. d = 8 6. Equal? = Yes 7. a×d = 24 8. b×c = 24 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! If a×d = b×c, the fractions are equal. FAQ Use? Quick way to compare fractions. Related calculators Proportion Calculator Solve a/b = c/x for the missing value. Comparing Fractions Calculator Compare two fractions to see which is larger. Fraction to Percent Calculator Convert a fraction to a percentage and decimal.