Home / 2,819.40-4,229.84-1,087.56

Finding the Fourth Proportional to 2,819.40, 4,229.84 and 1,087.56

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Solution

The fourth proportional to 2,819.40, 4,229.84 and 1,087.56 is: 1,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.40 : 4,229.84 = 1,087.56 : x
  2. Step 2: Convert to fraction form
    2,819.40/4,229.84 = 1,087.56/x
  3. Step 3: Cross multiply
    2,819.40x = 4,229.84 × 1,087.56
  4. Step 4: Simplify right side
    2,819.40x = 4,600,204.79
  5. Step 5: Solve for x
    x = 4,600,204.79/2,819.40
  6. Step 6: Final answer
    x = 1,631.63

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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.