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Finding the Fourth Proportional to 5,691.87, 8,521.20 and 3,493.94

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Solution

The fourth proportional to 5,691.87, 8,521.20 and 3,493.94 is: 5,230.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.87 : 8,521.20 = 3,493.94 : x
  2. Step 2: Convert to fraction form
    5,691.87/8,521.20 = 3,493.94/x
  3. Step 3: Cross multiply
    5,691.87x = 8,521.20 × 3,493.94
  4. Step 4: Simplify right side
    5,691.87x = 29,772,518.92
  5. Step 5: Solve for x
    x = 29,772,518.92/5,691.87
  6. Step 6: Final answer
    x = 5,230.71

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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.