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Finding the Fourth Proportional to 3,425.52, 5,138.92 and 1,373.68

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Solution

The fourth proportional to 3,425.52, 5,138.92 and 1,373.68 is: 2,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.52 : 5,138.92 = 1,373.68 : x
  2. Step 2: Convert to fraction form
    3,425.52/5,138.92 = 1,373.68/x
  3. Step 3: Cross multiply
    3,425.52x = 5,138.92 × 1,373.68
  4. Step 4: Simplify right side
    3,425.52x = 7,059,231.63
  5. Step 5: Solve for x
    x = 7,059,231.63/3,425.52
  6. Step 6: Final answer
    x = 2,060.78

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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.