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Finding the Fourth Proportional to 3,155.25, 4,732.68 and 963.78

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Solution

The fourth proportional to 3,155.25, 4,732.68 and 963.78 is: 1,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.25 : 4,732.68 = 963.78 : x
  2. Step 2: Convert to fraction form
    3,155.25/4,732.68 = 963.78/x
  3. Step 3: Cross multiply
    3,155.25x = 4,732.68 × 963.78
  4. Step 4: Simplify right side
    3,155.25x = 4,561,262.33
  5. Step 5: Solve for x
    x = 4,561,262.33/3,155.25
  6. Step 6: Final answer
    x = 1,445.61

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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.