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Finding the Fourth Proportional to 3,470.52, 5,203.92 and 1,520.43

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Solution

The fourth proportional to 3,470.52, 5,203.92 and 1,520.43 is: 2,279.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.52 : 5,203.92 = 1,520.43 : x
  2. Step 2: Convert to fraction form
    3,470.52/5,203.92 = 1,520.43/x
  3. Step 3: Cross multiply
    3,470.52x = 5,203.92 × 1,520.43
  4. Step 4: Simplify right side
    3,470.52x = 7,912,196.09
  5. Step 5: Solve for x
    x = 7,912,196.09/3,470.52
  6. Step 6: Final answer
    x = 2,279.83

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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.