Home / 7,819.97-11,731.26-3,440.49

Finding the Fourth Proportional to 7,819.97, 11,731.26 and 3,440.49

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Solution

The fourth proportional to 7,819.97, 11,731.26 and 3,440.49 is: 5,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.97 : 11,731.26 = 3,440.49 : x
  2. Step 2: Convert to fraction form
    7,819.97/11,731.26 = 3,440.49/x
  3. Step 3: Cross multiply
    7,819.97x = 11,731.26 × 3,440.49
  4. Step 4: Simplify right side
    7,819.97x = 40,361,282.72
  5. Step 5: Solve for x
    x = 40,361,282.72/7,819.97
  6. Step 6: Final answer
    x = 5,161.31

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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.