Step 1: Start with the fraction 31/2.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

31 ÷ 2 = 15.5

Step 3: Multiply the result by 100 to get the percentage.

15.5 × 100 = 1550.0%

Final Answer: 31/2 as a percentage is 1550.0%.