Home / 2,819.90-4,229.76-1,359.20

Finding the Fourth Proportional to 2,819.90, 4,229.76 and 1,359.20

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Solution

The fourth proportional to 2,819.90, 4,229.76 and 1,359.20 is: 2,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.90 : 4,229.76 = 1,359.20 : x
  2. Step 2: Convert to fraction form
    2,819.90/4,229.76 = 1,359.20/x
  3. Step 3: Cross multiply
    2,819.90x = 4,229.76 × 1,359.20
  4. Step 4: Simplify right side
    2,819.90x = 5,749,089.79
  5. Step 5: Solve for x
    x = 5,749,089.79/2,819.90
  6. Step 6: Final answer
    x = 2,038.76

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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.