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Finding the Fourth Proportional to 5,129.58, 7,691.78 and 2,663.70

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Solution

The fourth proportional to 5,129.58, 7,691.78 and 2,663.70 is: 3,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.58 : 7,691.78 = 2,663.70 : x
  2. Step 2: Convert to fraction form
    5,129.58/7,691.78 = 2,663.70/x
  3. Step 3: Cross multiply
    5,129.58x = 7,691.78 × 2,663.70
  4. Step 4: Simplify right side
    5,129.58x = 20,488,594.39
  5. Step 5: Solve for x
    x = 20,488,594.39/5,129.58
  6. Step 6: Final answer
    x = 3,994.21

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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.