Home / 3,912.86-5,865.19-1,831.11

Finding the Fourth Proportional to 3,912.86, 5,865.19 and 1,831.11

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Solution

The fourth proportional to 3,912.86, 5,865.19 and 1,831.11 is: 2,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.86 : 5,865.19 = 1,831.11 : x
  2. Step 2: Convert to fraction form
    3,912.86/5,865.19 = 1,831.11/x
  3. Step 3: Cross multiply
    3,912.86x = 5,865.19 × 1,831.11
  4. Step 4: Simplify right side
    3,912.86x = 10,739,798.91
  5. Step 5: Solve for x
    x = 10,739,798.91/3,912.86
  6. Step 6: Final answer
    x = 2,744.74

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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.