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Finding the Fourth Proportional to 3,660.66, 5,489.92 and 2,100.39

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Solution

The fourth proportional to 3,660.66, 5,489.92 and 2,100.39 is: 3,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.66 : 5,489.92 = 2,100.39 : x
  2. Step 2: Convert to fraction form
    3,660.66/5,489.92 = 2,100.39/x
  3. Step 3: Cross multiply
    3,660.66x = 5,489.92 × 2,100.39
  4. Step 4: Simplify right side
    3,660.66x = 11,530,962.57
  5. Step 5: Solve for x
    x = 11,530,962.57/3,660.66
  6. Step 6: Final answer
    x = 3,149.97

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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.