Home / 10,078.20-15,115.86-2,682

Finding the Fourth Proportional to 10,078.20, 15,115.86 and 2,682

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Solution

The fourth proportional to 10,078.20, 15,115.86 and 2,682 is: 4,022.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.20 : 15,115.86 = 2,682 : x
  2. Step 2: Convert to fraction form
    10,078.20/15,115.86 = 2,682/x
  3. Step 3: Cross multiply
    10,078.20x = 15,115.86 × 2,682
  4. Step 4: Simplify right side
    10,078.20x = 40,540,736.52
  5. Step 5: Solve for x
    x = 40,540,736.52/10,078.20
  6. Step 6: Final answer
    x = 4,022.62

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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.