Home / 3,861.44-5,795.40-2,131.28

Finding the Fourth Proportional to 3,861.44, 5,795.40 and 2,131.28

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Solution

The fourth proportional to 3,861.44, 5,795.40 and 2,131.28 is: 3,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.44 : 5,795.40 = 2,131.28 : x
  2. Step 2: Convert to fraction form
    3,861.44/5,795.40 = 2,131.28/x
  3. Step 3: Cross multiply
    3,861.44x = 5,795.40 × 2,131.28
  4. Step 4: Simplify right side
    3,861.44x = 12,351,620.11
  5. Step 5: Solve for x
    x = 12,351,620.11/3,861.44
  6. Step 6: Final answer
    x = 3,198.71

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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.