Home / 3,831.30-5,286.74-2,152.49

Finding the Fourth Proportional to 3,831.30, 5,286.74 and 2,152.49

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Solution

The fourth proportional to 3,831.30, 5,286.74 and 2,152.49 is: 2,970.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.30 : 5,286.74 = 2,152.49 : x
  2. Step 2: Convert to fraction form
    3,831.30/5,286.74 = 2,152.49/x
  3. Step 3: Cross multiply
    3,831.30x = 5,286.74 × 2,152.49
  4. Step 4: Simplify right side
    3,831.30x = 11,379,617.79
  5. Step 5: Solve for x
    x = 11,379,617.79/3,831.30
  6. Step 6: Final answer
    x = 2,970.17

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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.