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Finding the Fourth Proportional to 8,336.76, 12,505.56 and 2,789.88

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Solution

The fourth proportional to 8,336.76, 12,505.56 and 2,789.88 is: 4,184.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,336.76 : 12,505.56 = 2,789.88 : x
  2. Step 2: Convert to fraction form
    8,336.76/12,505.56 = 2,789.88/x
  3. Step 3: Cross multiply
    8,336.76x = 12,505.56 × 2,789.88
  4. Step 4: Simplify right side
    8,336.76x = 34,889,011.73
  5. Step 5: Solve for x
    x = 34,889,011.73/8,336.76
  6. Step 6: Final answer
    x = 4,184.96

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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.