Home / 3,214.30-4,821.45-1,831.90

Finding the Fourth Proportional to 3,214.30, 4,821.45 and 1,831.90

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Solution

The fourth proportional to 3,214.30, 4,821.45 and 1,831.90 is: 2,747.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.30 : 4,821.45 = 1,831.90 : x
  2. Step 2: Convert to fraction form
    3,214.30/4,821.45 = 1,831.90/x
  3. Step 3: Cross multiply
    3,214.30x = 4,821.45 × 1,831.90
  4. Step 4: Simplify right side
    3,214.30x = 8,832,414.26
  5. Step 5: Solve for x
    x = 8,832,414.26/3,214.30
  6. Step 6: Final answer
    x = 2,747.85

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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.