Home / 3,839.40-5,755.35-2,082.81

Finding the Fourth Proportional to 3,839.40, 5,755.35 and 2,082.81

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Solution

The fourth proportional to 3,839.40, 5,755.35 and 2,082.81 is: 3,122.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.40 : 5,755.35 = 2,082.81 : x
  2. Step 2: Convert to fraction form
    3,839.40/5,755.35 = 2,082.81/x
  3. Step 3: Cross multiply
    3,839.40x = 5,755.35 × 2,082.81
  4. Step 4: Simplify right side
    3,839.40x = 11,987,329.93
  5. Step 5: Solve for x
    x = 11,987,329.93/3,839.40
  6. Step 6: Final answer
    x = 3,122.19

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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.