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Finding the Fourth Proportional to 8,930.52, 12,307.14 and 8,711.82

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Solution

The fourth proportional to 8,930.52, 12,307.14 and 8,711.82 is: 12,005.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.52 : 12,307.14 = 8,711.82 : x
  2. Step 2: Convert to fraction form
    8,930.52/12,307.14 = 8,711.82/x
  3. Step 3: Cross multiply
    8,930.52x = 12,307.14 × 8,711.82
  4. Step 4: Simplify right side
    8,930.52x = 107,217,588.39
  5. Step 5: Solve for x
    x = 107,217,588.39/8,930.52
  6. Step 6: Final answer
    x = 12,005.75

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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.