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Finding the Fourth Proportional to 8,236.35, 12,354.63 and 2,689.65

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Solution

The fourth proportional to 8,236.35, 12,354.63 and 2,689.65 is: 4,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,236.35 : 12,354.63 = 2,689.65 : x
  2. Step 2: Convert to fraction form
    8,236.35/12,354.63 = 2,689.65/x
  3. Step 3: Cross multiply
    8,236.35x = 12,354.63 × 2,689.65
  4. Step 4: Simplify right side
    8,236.35x = 33,229,630.58
  5. Step 5: Solve for x
    x = 33,229,630.58/8,236.35
  6. Step 6: Final answer
    x = 4,034.51

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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.