Home / 985-1,531

Finding the Third Proportional to 985 and 1,531

Calculator

Solution

The third proportional to 985 and 1,531 is: 2,379.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    985 : 1,531 = 1,531 : x
  2. Step 2: Convert to fraction form
    985/1,531 = 1,531/x
  3. Step 3: Cross multiply
    985x = 1,531 × 1,531
  4. Step 4: Simplify right side
    985x = 2,343,961
  5. Step 5: Solve for x
    x = 2,343,961/985
  6. Step 6: Final answer
    x = 2,379.66

Related Problems

Find third proportional to 492.50 and 765.50
Half scale
Find third proportional to 1,970 and 3,062
Double scale
Find third proportional to 987 and 1,534
Similar ratio
Find third proportional to 1,477.50 and 2,296.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.