Home / 3,831.85-5,288.18-2,885.97

Finding the Fourth Proportional to 3,831.85, 5,288.18 and 2,885.97

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Solution

The fourth proportional to 3,831.85, 5,288.18 and 2,885.97 is: 3,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.85 : 5,288.18 = 2,885.97 : x
  2. Step 2: Convert to fraction form
    3,831.85/5,288.18 = 2,885.97/x
  3. Step 3: Cross multiply
    3,831.85x = 5,288.18 × 2,885.97
  4. Step 4: Simplify right side
    3,831.85x = 15,261,528.83
  5. Step 5: Solve for x
    x = 15,261,528.83/3,831.85
  6. Step 6: Final answer
    x = 3,982.81

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1.5x scale

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.