Home / 3,831.92-5,280.12-3,082.88

Finding the Fourth Proportional to 3,831.92, 5,280.12 and 3,082.88

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Solution

The fourth proportional to 3,831.92, 5,280.12 and 3,082.88 is: 4,247.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.92 : 5,280.12 = 3,082.88 : x
  2. Step 2: Convert to fraction form
    3,831.92/5,280.12 = 3,082.88/x
  3. Step 3: Cross multiply
    3,831.92x = 5,280.12 × 3,082.88
  4. Step 4: Simplify right side
    3,831.92x = 16,277,976.35
  5. Step 5: Solve for x
    x = 16,277,976.35/3,831.92
  6. Step 6: Final answer
    x = 4,247.99

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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.