Home / 2,831.20-4,243.20-1,367.20

Finding the Fourth Proportional to 2,831.20, 4,243.20 and 1,367.20

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Solution

The fourth proportional to 2,831.20, 4,243.20 and 1,367.20 is: 2,049.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.20 : 4,243.20 = 1,367.20 : x
  2. Step 2: Convert to fraction form
    2,831.20/4,243.20 = 1,367.20/x
  3. Step 3: Cross multiply
    2,831.20x = 4,243.20 × 1,367.20
  4. Step 4: Simplify right side
    2,831.20x = 5,801,303.04
  5. Step 5: Solve for x
    x = 5,801,303.04/2,831.20
  6. Step 6: Final answer
    x = 2,049.06

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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.