Home / 2,819.88-3,891.83-1,641.33

Finding the Fourth Proportional to 2,819.88, 3,891.83 and 1,641.33

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Solution

The fourth proportional to 2,819.88, 3,891.83 and 1,641.33 is: 2,265.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.88 : 3,891.83 = 1,641.33 : x
  2. Step 2: Convert to fraction form
    2,819.88/3,891.83 = 1,641.33/x
  3. Step 3: Cross multiply
    2,819.88x = 3,891.83 × 1,641.33
  4. Step 4: Simplify right side
    2,819.88x = 6,387,765.55
  5. Step 5: Solve for x
    x = 6,387,765.55/2,819.88
  6. Step 6: Final answer
    x = 2,265.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.