Home / 3,819.62-5,721.97-1,815.46

Finding the Fourth Proportional to 3,819.62, 5,721.97 and 1,815.46

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Solution

The fourth proportional to 3,819.62, 5,721.97 and 1,815.46 is: 2,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.62 : 5,721.97 = 1,815.46 : x
  2. Step 2: Convert to fraction form
    3,819.62/5,721.97 = 1,815.46/x
  3. Step 3: Cross multiply
    3,819.62x = 5,721.97 × 1,815.46
  4. Step 4: Simplify right side
    3,819.62x = 10,387,988.81
  5. Step 5: Solve for x
    x = 10,387,988.81/3,819.62
  6. Step 6: Final answer
    x = 2,719.64

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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.