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Finding the Fourth Proportional to 7,963.92, 11,951.28 and 2,769.80

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Solution

The fourth proportional to 7,963.92, 11,951.28 and 2,769.80 is: 4,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.92 : 11,951.28 = 2,769.80 : x
  2. Step 2: Convert to fraction form
    7,963.92/11,951.28 = 2,769.80/x
  3. Step 3: Cross multiply
    7,963.92x = 11,951.28 × 2,769.80
  4. Step 4: Simplify right side
    7,963.92x = 33,102,655.34
  5. Step 5: Solve for x
    x = 33,102,655.34/7,963.92
  6. Step 6: Final answer
    x = 4,156.58

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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.