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Finding the Fourth Proportional to 8,854.68, 12,214.86 and 7,177.98

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Solution

The fourth proportional to 8,854.68, 12,214.86 and 7,177.98 is: 9,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,854.68 : 12,214.86 = 7,177.98 : x
  2. Step 2: Convert to fraction form
    8,854.68/12,214.86 = 7,177.98/x
  3. Step 3: Cross multiply
    8,854.68x = 12,214.86 × 7,177.98
  4. Step 4: Simplify right side
    8,854.68x = 87,678,020.78
  5. Step 5: Solve for x
    x = 87,678,020.78/8,854.68
  6. Step 6: Final answer
    x = 9,901.88

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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.