Home / 1,831.80-2,745.84-905.97

Finding the Fourth Proportional to 1,831.80, 2,745.84 and 905.97

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Solution

The fourth proportional to 1,831.80, 2,745.84 and 905.97 is: 1,358.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.80 : 2,745.84 = 905.97 : x
  2. Step 2: Convert to fraction form
    1,831.80/2,745.84 = 905.97/x
  3. Step 3: Cross multiply
    1,831.80x = 2,745.84 × 905.97
  4. Step 4: Simplify right side
    1,831.80x = 2,487,648.66
  5. Step 5: Solve for x
    x = 2,487,648.66/1,831.80
  6. Step 6: Final answer
    x = 1,358.04

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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.