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Finding the Fourth Proportional to 7,659.55, 11,490.72 and 2,732.05

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Solution

The fourth proportional to 7,659.55, 11,490.72 and 2,732.05 is: 4,098.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.55 : 11,490.72 = 2,732.05 : x
  2. Step 2: Convert to fraction form
    7,659.55/11,490.72 = 2,732.05/x
  3. Step 3: Cross multiply
    7,659.55x = 11,490.72 × 2,732.05
  4. Step 4: Simplify right side
    7,659.55x = 31,393,221.58
  5. Step 5: Solve for x
    x = 31,393,221.58/7,659.55
  6. Step 6: Final answer
    x = 4,098.57

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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.