Home / 3,219.44-4,831.31-1,139.43

Finding the Fourth Proportional to 3,219.44, 4,831.31 and 1,139.43

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Solution

The fourth proportional to 3,219.44, 4,831.31 and 1,139.43 is: 1,709.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.44 : 4,831.31 = 1,139.43 : x
  2. Step 2: Convert to fraction form
    3,219.44/4,831.31 = 1,139.43/x
  3. Step 3: Cross multiply
    3,219.44x = 4,831.31 × 1,139.43
  4. Step 4: Simplify right side
    3,219.44x = 5,504,960.52
  5. Step 5: Solve for x
    x = 5,504,960.52/3,219.44
  6. Step 6: Final answer
    x = 1,709.92

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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.