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Finding the Fourth Proportional to 6,612.41, 9,921.87 and 3,101.79

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Solution

The fourth proportional to 6,612.41, 9,921.87 and 3,101.79 is: 4,654.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.41 : 9,921.87 = 3,101.79 : x
  2. Step 2: Convert to fraction form
    6,612.41/9,921.87 = 3,101.79/x
  3. Step 3: Cross multiply
    6,612.41x = 9,921.87 × 3,101.79
  4. Step 4: Simplify right side
    6,612.41x = 30,775,557.15
  5. Step 5: Solve for x
    x = 30,775,557.15/6,612.41
  6. Step 6: Final answer
    x = 4,654.22

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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.