Home / 3,910.65-5,396.13-2,231.79

Finding the Fourth Proportional to 3,910.65, 5,396.13 and 2,231.79

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Solution

The fourth proportional to 3,910.65, 5,396.13 and 2,231.79 is: 3,079.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.65 : 5,396.13 = 2,231.79 : x
  2. Step 2: Convert to fraction form
    3,910.65/5,396.13 = 2,231.79/x
  3. Step 3: Cross multiply
    3,910.65x = 5,396.13 × 2,231.79
  4. Step 4: Simplify right side
    3,910.65x = 12,043,028.97
  5. Step 5: Solve for x
    x = 12,043,028.97/3,910.65
  6. Step 6: Final answer
    x = 3,079.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.