Home / 3,855.67-5,321.30-2,177.15

Finding the Fourth Proportional to 3,855.67, 5,321.30 and 2,177.15

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Solution

The fourth proportional to 3,855.67, 5,321.30 and 2,177.15 is: 3,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.67 : 5,321.30 = 2,177.15 : x
  2. Step 2: Convert to fraction form
    3,855.67/5,321.30 = 2,177.15/x
  3. Step 3: Cross multiply
    3,855.67x = 5,321.30 × 2,177.15
  4. Step 4: Simplify right side
    3,855.67x = 11,585,230.80
  5. Step 5: Solve for x
    x = 11,585,230.80/3,855.67
  6. Step 6: Final answer
    x = 3,004.73

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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.