Home / 2,819.20-4,228.20-1,259.20

Finding the Fourth Proportional to 2,819.20, 4,228.20 and 1,259.20

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Solution

The fourth proportional to 2,819.20, 4,228.20 and 1,259.20 is: 1,888.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.20 : 4,228.20 = 1,259.20 : x
  2. Step 2: Convert to fraction form
    2,819.20/4,228.20 = 1,259.20/x
  3. Step 3: Cross multiply
    2,819.20x = 4,228.20 × 1,259.20
  4. Step 4: Simplify right side
    2,819.20x = 5,324,149.44
  5. Step 5: Solve for x
    x = 5,324,149.44/2,819.20
  6. Step 6: Final answer
    x = 1,888.53

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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.