Home / 3,831.25-5,287.74-3,581.11

Finding the Fourth Proportional to 3,831.25, 5,287.74 and 3,581.11

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Solution

The fourth proportional to 3,831.25, 5,287.74 and 3,581.11 is: 4,942.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.25 : 5,287.74 = 3,581.11 : x
  2. Step 2: Convert to fraction form
    3,831.25/5,287.74 = 3,581.11/x
  3. Step 3: Cross multiply
    3,831.25x = 5,287.74 × 3,581.11
  4. Step 4: Simplify right side
    3,831.25x = 18,935,969.64
  5. Step 5: Solve for x
    x = 18,935,969.64/3,831.25
  6. Step 6: Final answer
    x = 4,942.51

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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.