Home / 6,738.20-10,107.30-2,120.60

Finding the Fourth Proportional to 6,738.20, 10,107.30 and 2,120.60

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Solution

The fourth proportional to 6,738.20, 10,107.30 and 2,120.60 is: 3,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,738.20 : 10,107.30 = 2,120.60 : x
  2. Step 2: Convert to fraction form
    6,738.20/10,107.30 = 2,120.60/x
  3. Step 3: Cross multiply
    6,738.20x = 10,107.30 × 2,120.60
  4. Step 4: Simplify right side
    6,738.20x = 21,433,540.38
  5. Step 5: Solve for x
    x = 21,433,540.38/6,738.20
  6. Step 6: Final answer
    x = 3,180.90

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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.