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Finding the Fourth Proportional to 8,631.44, 12,934.80 and 4,926

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Solution

The fourth proportional to 8,631.44, 12,934.80 and 4,926 is: 7,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.44 : 12,934.80 = 4,926 : x
  2. Step 2: Convert to fraction form
    8,631.44/12,934.80 = 4,926/x
  3. Step 3: Cross multiply
    8,631.44x = 12,934.80 × 4,926
  4. Step 4: Simplify right side
    8,631.44x = 63,716,824.80
  5. Step 5: Solve for x
    x = 63,716,824.80/8,631.44
  6. Step 6: Final answer
    x = 7,381.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.