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Finding the Fourth Proportional to 3,651.69, 5,481.18 and 2,481.78

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Solution

The fourth proportional to 3,651.69, 5,481.18 and 2,481.78 is: 3,725.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.69 : 5,481.18 = 2,481.78 : x
  2. Step 2: Convert to fraction form
    3,651.69/5,481.18 = 2,481.78/x
  3. Step 3: Cross multiply
    3,651.69x = 5,481.18 × 2,481.78
  4. Step 4: Simplify right side
    3,651.69x = 13,603,082.90
  5. Step 5: Solve for x
    x = 13,603,082.90/3,651.69
  6. Step 6: Final answer
    x = 3,725.15

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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.