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Finding the Fourth Proportional to 3,168.80, 4,747.20 and 2,753.24

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Solution

The fourth proportional to 3,168.80, 4,747.20 and 2,753.24 is: 4,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.80 : 4,747.20 = 2,753.24 : x
  2. Step 2: Convert to fraction form
    3,168.80/4,747.20 = 2,753.24/x
  3. Step 3: Cross multiply
    3,168.80x = 4,747.20 × 2,753.24
  4. Step 4: Simplify right side
    3,168.80x = 13,070,180.93
  5. Step 5: Solve for x
    x = 13,070,180.93/3,168.80
  6. Step 6: Final answer
    x = 4,124.65

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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.