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Finding the Fourth Proportional to 5,691.92, 8,540.92 and 2,229.20

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Solution

The fourth proportional to 5,691.92, 8,540.92 and 2,229.20 is: 3,344.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.92 : 8,540.92 = 2,229.20 : x
  2. Step 2: Convert to fraction form
    5,691.92/8,540.92 = 2,229.20/x
  3. Step 3: Cross multiply
    5,691.92x = 8,540.92 × 2,229.20
  4. Step 4: Simplify right side
    5,691.92x = 19,039,418.86
  5. Step 5: Solve for x
    x = 19,039,418.86/5,691.92
  6. Step 6: Final answer
    x = 3,344.99

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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.