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Finding the Fourth Proportional to 8,235.39, 12,354.03 and 2,687.16

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Solution

The fourth proportional to 8,235.39, 12,354.03 and 2,687.16 is: 4,031.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.39 : 12,354.03 = 2,687.16 : x
  2. Step 2: Convert to fraction form
    8,235.39/12,354.03 = 2,687.16/x
  3. Step 3: Cross multiply
    8,235.39x = 12,354.03 × 2,687.16
  4. Step 4: Simplify right side
    8,235.39x = 33,197,255.25
  5. Step 5: Solve for x
    x = 33,197,255.25/8,235.39
  6. Step 6: Final answer
    x = 4,031.05

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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.