Home / 3,831.18-5,718.81-3,286.86

Finding the Fourth Proportional to 3,831.18, 5,718.81 and 3,286.86

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Solution

The fourth proportional to 3,831.18, 5,718.81 and 3,286.86 is: 4,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.18 : 5,718.81 = 3,286.86 : x
  2. Step 2: Convert to fraction form
    3,831.18/5,718.81 = 3,286.86/x
  3. Step 3: Cross multiply
    3,831.18x = 5,718.81 × 3,286.86
  4. Step 4: Simplify right side
    3,831.18x = 18,796,927.84
  5. Step 5: Solve for x
    x = 18,796,927.84/3,831.18
  6. Step 6: Final answer
    x = 4,906.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.