Home / 3,938.66-5,909.44-1,831.26

Finding the Fourth Proportional to 3,938.66, 5,909.44 and 1,831.26

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Solution

The fourth proportional to 3,938.66, 5,909.44 and 1,831.26 is: 2,747.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.66 : 5,909.44 = 1,831.26 : x
  2. Step 2: Convert to fraction form
    3,938.66/5,909.44 = 1,831.26/x
  3. Step 3: Cross multiply
    3,938.66x = 5,909.44 × 1,831.26
  4. Step 4: Simplify right side
    3,938.66x = 10,821,721.09
  5. Step 5: Solve for x
    x = 10,821,721.09/3,938.66
  6. Step 6: Final answer
    x = 2,747.56

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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.