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Finding the Fourth Proportional to 2,474.61, 3,711.92 and 743.64

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Solution

The fourth proportional to 2,474.61, 3,711.92 and 743.64 is: 1,115.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,474.61 : 3,711.92 = 743.64 : x
  2. Step 2: Convert to fraction form
    2,474.61/3,711.92 = 743.64/x
  3. Step 3: Cross multiply
    2,474.61x = 3,711.92 × 743.64
  4. Step 4: Simplify right side
    2,474.61x = 2,760,328.47
  5. Step 5: Solve for x
    x = 2,760,328.47/2,474.61
  6. Step 6: Final answer
    x = 1,115.46

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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.