Home / 3,765.96-5,640.75-2,121.66

Finding the Fourth Proportional to 3,765.96, 5,640.75 and 2,121.66

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Solution

The fourth proportional to 3,765.96, 5,640.75 and 2,121.66 is: 3,177.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.96 : 5,640.75 = 2,121.66 : x
  2. Step 2: Convert to fraction form
    3,765.96/5,640.75 = 2,121.66/x
  3. Step 3: Cross multiply
    3,765.96x = 5,640.75 × 2,121.66
  4. Step 4: Simplify right side
    3,765.96x = 11,967,753.65
  5. Step 5: Solve for x
    x = 11,967,753.65/3,765.96
  6. Step 6: Final answer
    x = 3,177.88

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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.