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Finding the Fourth Proportional to 9,375.78, 12,932.60 and 7,132.74

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Solution

The fourth proportional to 9,375.78, 12,932.60 and 7,132.74 is: 9,838.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,375.78 : 12,932.60 = 7,132.74 : x
  2. Step 2: Convert to fraction form
    9,375.78/12,932.60 = 7,132.74/x
  3. Step 3: Cross multiply
    9,375.78x = 12,932.60 × 7,132.74
  4. Step 4: Simplify right side
    9,375.78x = 92,244,837.66
  5. Step 5: Solve for x
    x = 92,244,837.66/9,375.78
  6. Step 6: Final answer
    x = 9,838.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.