Home / 5,139.28-7,711.80-2,542.24

Finding the Fourth Proportional to 5,139.28, 7,711.80 and 2,542.24

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Solution

The fourth proportional to 5,139.28, 7,711.80 and 2,542.24 is: 3,814.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.28 : 7,711.80 = 2,542.24 : x
  2. Step 2: Convert to fraction form
    5,139.28/7,711.80 = 2,542.24/x
  3. Step 3: Cross multiply
    5,139.28x = 7,711.80 × 2,542.24
  4. Step 4: Simplify right side
    5,139.28x = 19,605,246.43
  5. Step 5: Solve for x
    x = 19,605,246.43/5,139.28
  6. Step 6: Final answer
    x = 3,814.78

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1.5x scale

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.