Home / 3,849.12-5,311.44-2,255.31

Finding the Fourth Proportional to 3,849.12, 5,311.44 and 2,255.31

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Solution

The fourth proportional to 3,849.12, 5,311.44 and 2,255.31 is: 3,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.12 : 5,311.44 = 2,255.31 : x
  2. Step 2: Convert to fraction form
    3,849.12/5,311.44 = 2,255.31/x
  3. Step 3: Cross multiply
    3,849.12x = 5,311.44 × 2,255.31
  4. Step 4: Simplify right side
    3,849.12x = 11,978,943.75
  5. Step 5: Solve for x
    x = 11,978,943.75/3,849.12
  6. Step 6: Final answer
    x = 3,112.13

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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.