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Finding the Fourth Proportional to 8,039.86, 12,101.69 and 7,275.76

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Solution

The fourth proportional to 8,039.86, 12,101.69 and 7,275.76 is: 10,951.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,039.86 : 12,101.69 = 7,275.76 : x
  2. Step 2: Convert to fraction form
    8,039.86/12,101.69 = 7,275.76/x
  3. Step 3: Cross multiply
    8,039.86x = 12,101.69 × 7,275.76
  4. Step 4: Simplify right side
    8,039.86x = 88,048,979.97
  5. Step 5: Solve for x
    x = 88,048,979.97/8,039.86
  6. Step 6: Final answer
    x = 10,951.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.