Home / 3,831.76-5,286.72-2,259.28

Finding the Fourth Proportional to 3,831.76, 5,286.72 and 2,259.28

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Solution

The fourth proportional to 3,831.76, 5,286.72 and 2,259.28 is: 3,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.76 : 5,286.72 = 2,259.28 : x
  2. Step 2: Convert to fraction form
    3,831.76/5,286.72 = 2,259.28/x
  3. Step 3: Cross multiply
    3,831.76x = 5,286.72 × 2,259.28
  4. Step 4: Simplify right side
    3,831.76x = 11,944,180.76
  5. Step 5: Solve for x
    x = 11,944,180.76/3,831.76
  6. Step 6: Final answer
    x = 3,117.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.