Home / 3,932.40-5,898.24-1,985.92

Finding the Fourth Proportional to 3,932.40, 5,898.24 and 1,985.92

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Solution

The fourth proportional to 3,932.40, 5,898.24 and 1,985.92 is: 2,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.40 : 5,898.24 = 1,985.92 : x
  2. Step 2: Convert to fraction form
    3,932.40/5,898.24 = 1,985.92/x
  3. Step 3: Cross multiply
    3,932.40x = 5,898.24 × 1,985.92
  4. Step 4: Simplify right side
    3,932.40x = 11,713,432.78
  5. Step 5: Solve for x
    x = 11,713,432.78/3,932.40
  6. Step 6: Final answer
    x = 2,978.70

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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.