Home / 3,912.30-5,868.39-1,831.56

Finding the Fourth Proportional to 3,912.30, 5,868.39 and 1,831.56

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Solution

The fourth proportional to 3,912.30, 5,868.39 and 1,831.56 is: 2,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.30 : 5,868.39 = 1,831.56 : x
  2. Step 2: Convert to fraction form
    3,912.30/5,868.39 = 1,831.56/x
  3. Step 3: Cross multiply
    3,912.30x = 5,868.39 × 1,831.56
  4. Step 4: Simplify right side
    3,912.30x = 10,748,308.39
  5. Step 5: Solve for x
    x = 10,748,308.39/3,912.30
  6. Step 6: Final answer
    x = 2,747.31

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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.