Home / 3,932.15-5,426.12-2,139.61

Finding the Fourth Proportional to 3,932.15, 5,426.12 and 2,139.61

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Solution

The fourth proportional to 3,932.15, 5,426.12 and 2,139.61 is: 2,952.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.15 : 5,426.12 = 2,139.61 : x
  2. Step 2: Convert to fraction form
    3,932.15/5,426.12 = 2,139.61/x
  3. Step 3: Cross multiply
    3,932.15x = 5,426.12 × 2,139.61
  4. Step 4: Simplify right side
    3,932.15x = 11,609,769.92
  5. Step 5: Solve for x
    x = 11,609,769.92/3,932.15
  6. Step 6: Final answer
    x = 2,952.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.