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Finding the Fourth Proportional to 3,862.32, 5,793.92 and 1,398.30

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Solution

The fourth proportional to 3,862.32, 5,793.92 and 1,398.30 is: 2,097.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.32 : 5,793.92 = 1,398.30 : x
  2. Step 2: Convert to fraction form
    3,862.32/5,793.92 = 1,398.30/x
  3. Step 3: Cross multiply
    3,862.32x = 5,793.92 × 1,398.30
  4. Step 4: Simplify right side
    3,862.32x = 8,101,622.73
  5. Step 5: Solve for x
    x = 8,101,622.73/3,862.32
  6. Step 6: Final answer
    x = 2,097.61

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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.