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Finding the Fourth Proportional to 3,154.72, 4,731.84 and 963.32

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Solution

The fourth proportional to 3,154.72, 4,731.84 and 963.32 is: 1,444.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.72 : 4,731.84 = 963.32 : x
  2. Step 2: Convert to fraction form
    3,154.72/4,731.84 = 963.32/x
  3. Step 3: Cross multiply
    3,154.72x = 4,731.84 × 963.32
  4. Step 4: Simplify right side
    3,154.72x = 4,558,276.11
  5. Step 5: Solve for x
    x = 4,558,276.11/3,154.72
  6. Step 6: Final answer
    x = 1,444.91

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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.