Home / 2,231.31-3,077.87-1,434.36

Finding the Fourth Proportional to 2,231.31, 3,077.87 and 1,434.36

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Solution

The fourth proportional to 2,231.31, 3,077.87 and 1,434.36 is: 1,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.31 : 3,077.87 = 1,434.36 : x
  2. Step 2: Convert to fraction form
    2,231.31/3,077.87 = 1,434.36/x
  3. Step 3: Cross multiply
    2,231.31x = 3,077.87 × 1,434.36
  4. Step 4: Simplify right side
    2,231.31x = 4,414,766.44
  5. Step 5: Solve for x
    x = 4,414,766.44/2,231.31
  6. Step 6: Final answer
    x = 1,978.55

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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.