Home / 2,819.10-4,221.90-1,517.70

Finding the Fourth Proportional to 2,819.10, 4,221.90 and 1,517.70

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Solution

The fourth proportional to 2,819.10, 4,221.90 and 1,517.70 is: 2,272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.10 : 4,221.90 = 1,517.70 : x
  2. Step 2: Convert to fraction form
    2,819.10/4,221.90 = 1,517.70/x
  3. Step 3: Cross multiply
    2,819.10x = 4,221.90 × 1,517.70
  4. Step 4: Simplify right side
    2,819.10x = 6,407,577.63
  5. Step 5: Solve for x
    x = 6,407,577.63/2,819.10
  6. Step 6: Final answer
    x = 2,272.92

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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.