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Finding the Fourth Proportional to 8,458.34, 12,691.15 and 3,528.95

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Solution

The fourth proportional to 8,458.34, 12,691.15 and 3,528.95 is: 5,294.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.34 : 12,691.15 = 3,528.95 : x
  2. Step 2: Convert to fraction form
    8,458.34/12,691.15 = 3,528.95/x
  3. Step 3: Cross multiply
    8,458.34x = 12,691.15 × 3,528.95
  4. Step 4: Simplify right side
    8,458.34x = 44,786,370.34
  5. Step 5: Solve for x
    x = 44,786,370.34/8,458.34
  6. Step 6: Final answer
    x = 5,294.94

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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.