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Finding the Fourth Proportional to 6,612.31, 9,920.14 and 3,052.72

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Solution

The fourth proportional to 6,612.31, 9,920.14 and 3,052.72 is: 4,579.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.31 : 9,920.14 = 3,052.72 : x
  2. Step 2: Convert to fraction form
    6,612.31/9,920.14 = 3,052.72/x
  3. Step 3: Cross multiply
    6,612.31x = 9,920.14 × 3,052.72
  4. Step 4: Simplify right side
    6,612.31x = 30,283,344.92
  5. Step 5: Solve for x
    x = 30,283,344.92/6,612.31
  6. Step 6: Final answer
    x = 4,579.84

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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.