Home / 1,247.02-1,869.45-516.13

Finding the Fourth Proportional to 1,247.02, 1,869.45 and 516.13

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Solution

The fourth proportional to 1,247.02, 1,869.45 and 516.13 is: 773.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.02 : 1,869.45 = 516.13 : x
  2. Step 2: Convert to fraction form
    1,247.02/1,869.45 = 516.13/x
  3. Step 3: Cross multiply
    1,247.02x = 1,869.45 × 516.13
  4. Step 4: Simplify right side
    1,247.02x = 964,879.23
  5. Step 5: Solve for x
    x = 964,879.23/1,247.02
  6. Step 6: Final answer
    x = 773.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.