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Finding the Fourth Proportional to 8,912.84, 12,286.88 and 6,251.98

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Solution

The fourth proportional to 8,912.84, 12,286.88 and 6,251.98 is: 8,618.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.84 : 12,286.88 = 6,251.98 : x
  2. Step 2: Convert to fraction form
    8,912.84/12,286.88 = 6,251.98/x
  3. Step 3: Cross multiply
    8,912.84x = 12,286.88 × 6,251.98
  4. Step 4: Simplify right side
    8,912.84x = 76,817,328.02
  5. Step 5: Solve for x
    x = 76,817,328.02/8,912.84
  6. Step 6: Final answer
    x = 8,618.73

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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.