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Finding the Fourth Proportional to 3,154.48, 4,731.76 and 963.20

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Solution

The fourth proportional to 3,154.48, 4,731.76 and 963.20 is: 1,444.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.48 : 4,731.76 = 963.20 : x
  2. Step 2: Convert to fraction form
    3,154.48/4,731.76 = 963.20/x
  3. Step 3: Cross multiply
    3,154.48x = 4,731.76 × 963.20
  4. Step 4: Simplify right side
    3,154.48x = 4,557,631.23
  5. Step 5: Solve for x
    x = 4,557,631.23/3,154.48
  6. Step 6: Final answer
    x = 1,444.81

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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.