Home / 2,380.21-3,569.95-819.97

Finding the Fourth Proportional to 2,380.21, 3,569.95 and 819.97

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Solution

The fourth proportional to 2,380.21, 3,569.95 and 819.97 is: 1,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.21 : 3,569.95 = 819.97 : x
  2. Step 2: Convert to fraction form
    2,380.21/3,569.95 = 819.97/x
  3. Step 3: Cross multiply
    2,380.21x = 3,569.95 × 819.97
  4. Step 4: Simplify right side
    2,380.21x = 2,927,251.90
  5. Step 5: Solve for x
    x = 2,927,251.90/2,380.21
  6. Step 6: Final answer
    x = 1,229.83

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1.5x scale

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.