Home / 8,231.90-12,349.82-2,685.25

Finding the Fourth Proportional to 8,231.90, 12,349.82 and 2,685.25

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Solution

The fourth proportional to 8,231.90, 12,349.82 and 2,685.25 is: 4,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.90 : 12,349.82 = 2,685.25 : x
  2. Step 2: Convert to fraction form
    8,231.90/12,349.82 = 2,685.25/x
  3. Step 3: Cross multiply
    8,231.90x = 12,349.82 × 2,685.25
  4. Step 4: Simplify right side
    8,231.90x = 33,162,309.85
  5. Step 5: Solve for x
    x = 33,162,309.85/8,231.90
  6. Step 6: Final answer
    x = 4,028.51

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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.