Home / 3,219.91-4,433.60-2,819.28

Finding the Fourth Proportional to 3,219.91, 4,433.60 and 2,819.28

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Solution

The fourth proportional to 3,219.91, 4,433.60 and 2,819.28 is: 3,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.91 : 4,433.60 = 2,819.28 : x
  2. Step 2: Convert to fraction form
    3,219.91/4,433.60 = 2,819.28/x
  3. Step 3: Cross multiply
    3,219.91x = 4,433.60 × 2,819.28
  4. Step 4: Simplify right side
    3,219.91x = 12,499,523.54
  5. Step 5: Solve for x
    x = 12,499,523.54/3,219.91
  6. Step 6: Final answer
    x = 3,881.95

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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.