Home / 2,138.82-2,951.62-1,255.26

Finding the Fourth Proportional to 2,138.82, 2,951.62 and 1,255.26

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Solution

The fourth proportional to 2,138.82, 2,951.62 and 1,255.26 is: 1,732.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.82 : 2,951.62 = 1,255.26 : x
  2. Step 2: Convert to fraction form
    2,138.82/2,951.62 = 1,255.26/x
  3. Step 3: Cross multiply
    2,138.82x = 2,951.62 × 1,255.26
  4. Step 4: Simplify right side
    2,138.82x = 3,705,050.52
  5. Step 5: Solve for x
    x = 3,705,050.52/2,138.82
  6. Step 6: Final answer
    x = 1,732.29

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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.