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Finding the Fourth Proportional to 8,438.52, 12,657.78 and 2,594.37

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Solution

The fourth proportional to 8,438.52, 12,657.78 and 2,594.37 is: 3,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.52 : 12,657.78 = 2,594.37 : x
  2. Step 2: Convert to fraction form
    8,438.52/12,657.78 = 2,594.37/x
  3. Step 3: Cross multiply
    8,438.52x = 12,657.78 × 2,594.37
  4. Step 4: Simplify right side
    8,438.52x = 32,838,964.70
  5. Step 5: Solve for x
    x = 32,838,964.70/8,438.52
  6. Step 6: Final answer
    x = 3,891.56

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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.