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Finding the Fourth Proportional to 7,951.31, 11,908.51 and 7,674.53

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Solution

The fourth proportional to 7,951.31, 11,908.51 and 7,674.53 is: 11,493.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.31 : 11,908.51 = 7,674.53 : x
  2. Step 2: Convert to fraction form
    7,951.31/11,908.51 = 7,674.53/x
  3. Step 3: Cross multiply
    7,951.31x = 11,908.51 × 7,674.53
  4. Step 4: Simplify right side
    7,951.31x = 91,392,138.52
  5. Step 5: Solve for x
    x = 91,392,138.52/7,951.31
  6. Step 6: Final answer
    x = 11,493.97

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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.