Home / 3,869.76-5,805.12-2,831.04

Finding the Fourth Proportional to 3,869.76, 5,805.12 and 2,831.04

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Solution

The fourth proportional to 3,869.76, 5,805.12 and 2,831.04 is: 4,246.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.76 : 5,805.12 = 2,831.04 : x
  2. Step 2: Convert to fraction form
    3,869.76/5,805.12 = 2,831.04/x
  3. Step 3: Cross multiply
    3,869.76x = 5,805.12 × 2,831.04
  4. Step 4: Simplify right side
    3,869.76x = 16,434,526.92
  5. Step 5: Solve for x
    x = 16,434,526.92/3,869.76
  6. Step 6: Final answer
    x = 4,246.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.