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Finding the Fourth Proportional to 6,397.92, 9,612 and 5,581.44

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Solution

The fourth proportional to 6,397.92, 9,612 and 5,581.44 is: 8,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,397.92 : 9,612 = 5,581.44 : x
  2. Step 2: Convert to fraction form
    6,397.92/9,612 = 5,581.44/x
  3. Step 3: Cross multiply
    6,397.92x = 9,612 × 5,581.44
  4. Step 4: Simplify right side
    6,397.92x = 53,648,801.28
  5. Step 5: Solve for x
    x = 53,648,801.28/6,397.92
  6. Step 6: Final answer
    x = 8,385.35

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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.