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Finding the Fourth Proportional to 3,930.57, 5,424.57 and 2,337.66

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Solution

The fourth proportional to 3,930.57, 5,424.57 and 2,337.66 is: 3,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.57 : 5,424.57 = 2,337.66 : x
  2. Step 2: Convert to fraction form
    3,930.57/5,424.57 = 2,337.66/x
  3. Step 3: Cross multiply
    3,930.57x = 5,424.57 × 2,337.66
  4. Step 4: Simplify right side
    3,930.57x = 12,680,800.31
  5. Step 5: Solve for x
    x = 12,680,800.31/3,930.57
  6. Step 6: Final answer
    x = 3,226.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.