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Finding the Fourth Proportional to 5,129.92, 7,691.79 and 2,492.22

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Solution

The fourth proportional to 5,129.92, 7,691.79 and 2,492.22 is: 3,736.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.92 : 7,691.79 = 2,492.22 : x
  2. Step 2: Convert to fraction form
    5,129.92/7,691.79 = 2,492.22/x
  3. Step 3: Cross multiply
    5,129.92x = 7,691.79 × 2,492.22
  4. Step 4: Simplify right side
    5,129.92x = 19,169,671.06
  5. Step 5: Solve for x
    x = 19,169,671.06/5,129.92
  6. Step 6: Final answer
    x = 3,736.84

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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.