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Finding the Fourth Proportional to 5,251.68, 7,877.43 and 1,553.89

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Solution

The fourth proportional to 5,251.68, 7,877.43 and 1,553.89 is: 2,330.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.68 : 7,877.43 = 1,553.89 : x
  2. Step 2: Convert to fraction form
    5,251.68/7,877.43 = 1,553.89/x
  3. Step 3: Cross multiply
    5,251.68x = 7,877.43 × 1,553.89
  4. Step 4: Simplify right side
    5,251.68x = 12,240,659.70
  5. Step 5: Solve for x
    x = 12,240,659.70/5,251.68
  6. Step 6: Final answer
    x = 2,330.81

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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.