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Finding the Fourth Proportional to 8,357.46, 12,531.32 and 3,163.74

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Solution

The fourth proportional to 8,357.46, 12,531.32 and 3,163.74 is: 4,743.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,357.46 : 12,531.32 = 3,163.74 : x
  2. Step 2: Convert to fraction form
    8,357.46/12,531.32 = 3,163.74/x
  3. Step 3: Cross multiply
    8,357.46x = 12,531.32 × 3,163.74
  4. Step 4: Simplify right side
    8,357.46x = 39,645,838.34
  5. Step 5: Solve for x
    x = 39,645,838.34/8,357.46
  6. Step 6: Final answer
    x = 4,743.77

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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.