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Finding the Fourth Proportional to 3,286.32, 4,929.64 and 3,150.64

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Solution

The fourth proportional to 3,286.32, 4,929.64 and 3,150.64 is: 4,726.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.32 : 4,929.64 = 3,150.64 : x
  2. Step 2: Convert to fraction form
    3,286.32/4,929.64 = 3,150.64/x
  3. Step 3: Cross multiply
    3,286.32x = 4,929.64 × 3,150.64
  4. Step 4: Simplify right side
    3,286.32x = 15,531,520.97
  5. Step 5: Solve for x
    x = 15,531,520.97/3,286.32
  6. Step 6: Final answer
    x = 4,726.11

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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.