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Finding the Fourth Proportional to 8,231.69, 12,348.85 and 2,684.61

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Solution

The fourth proportional to 8,231.69, 12,348.85 and 2,684.61 is: 4,027.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.69 : 12,348.85 = 2,684.61 : x
  2. Step 2: Convert to fraction form
    8,231.69/12,348.85 = 2,684.61/x
  3. Step 3: Cross multiply
    8,231.69x = 12,348.85 × 2,684.61
  4. Step 4: Simplify right side
    8,231.69x = 33,151,846.20
  5. Step 5: Solve for x
    x = 33,151,846.20/8,231.69
  6. Step 6: Final answer
    x = 4,027.34

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1.5x scale

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.