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Finding the Fourth Proportional to 8,867.14, 12,240.74 and 6,316.66

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Solution

The fourth proportional to 8,867.14, 12,240.74 and 6,316.66 is: 8,719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.14 : 12,240.74 = 6,316.66 : x
  2. Step 2: Convert to fraction form
    8,867.14/12,240.74 = 6,316.66/x
  3. Step 3: Cross multiply
    8,867.14x = 12,240.74 × 6,316.66
  4. Step 4: Simplify right side
    8,867.14x = 77,320,592.73
  5. Step 5: Solve for x
    x = 77,320,592.73/8,867.14
  6. Step 6: Final answer
    x = 8,719.90

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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.