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Finding the Fourth Proportional to 3,902.92, 5,854.37 and 1,305.86

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Solution

The fourth proportional to 3,902.92, 5,854.37 and 1,305.86 is: 1,958.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.92 : 5,854.37 = 1,305.86 : x
  2. Step 2: Convert to fraction form
    3,902.92/5,854.37 = 1,305.86/x
  3. Step 3: Cross multiply
    3,902.92x = 5,854.37 × 1,305.86
  4. Step 4: Simplify right side
    3,902.92x = 7,644,951.81
  5. Step 5: Solve for x
    x = 7,644,951.81/3,902.92
  6. Step 6: Final answer
    x = 1,958.78

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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.