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Finding the Fourth Proportional to 8,306.58, 12,454.20 and 3,108

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Solution

The fourth proportional to 8,306.58, 12,454.20 and 3,108 is: 4,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,306.58 : 12,454.20 = 3,108 : x
  2. Step 2: Convert to fraction form
    8,306.58/12,454.20 = 3,108/x
  3. Step 3: Cross multiply
    8,306.58x = 12,454.20 × 3,108
  4. Step 4: Simplify right side
    8,306.58x = 38,707,653.60
  5. Step 5: Solve for x
    x = 38,707,653.60/8,306.58
  6. Step 6: Final answer
    x = 4,659.88

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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.