Home / 1,358.31-2,027.20-1,227.09

Finding the Fourth Proportional to 1,358.31, 2,027.20 and 1,227.09

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Solution

The fourth proportional to 1,358.31, 2,027.20 and 1,227.09 is: 1,831.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.31 : 2,027.20 = 1,227.09 : x
  2. Step 2: Convert to fraction form
    1,358.31/2,027.20 = 1,227.09/x
  3. Step 3: Cross multiply
    1,358.31x = 2,027.20 × 1,227.09
  4. Step 4: Simplify right side
    1,358.31x = 2,487,556.85
  5. Step 5: Solve for x
    x = 2,487,556.85/1,358.31
  6. Step 6: Final answer
    x = 1,831.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.