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Finding the Fourth Proportional to 9,375.72, 12,925.13 and 6,387.73

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Solution

The fourth proportional to 9,375.72, 12,925.13 and 6,387.73 is: 8,805.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,375.72 : 12,925.13 = 6,387.73 : x
  2. Step 2: Convert to fraction form
    9,375.72/12,925.13 = 6,387.73/x
  3. Step 3: Cross multiply
    9,375.72x = 12,925.13 × 6,387.73
  4. Step 4: Simplify right side
    9,375.72x = 82,562,208.15
  5. Step 5: Solve for x
    x = 82,562,208.15/9,375.72
  6. Step 6: Final answer
    x = 8,805.96

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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.