Home / 2,819.12-4,231.19-1,340.16

Finding the Fourth Proportional to 2,819.12, 4,231.19 and 1,340.16

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Solution

The fourth proportional to 2,819.12, 4,231.19 and 1,340.16 is: 2,011.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.12 : 4,231.19 = 1,340.16 : x
  2. Step 2: Convert to fraction form
    2,819.12/4,231.19 = 1,340.16/x
  3. Step 3: Cross multiply
    2,819.12x = 4,231.19 × 1,340.16
  4. Step 4: Simplify right side
    2,819.12x = 5,670,464.89
  5. Step 5: Solve for x
    x = 5,670,464.89/2,819.12
  6. Step 6: Final answer
    x = 2,011.43

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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.