Home / 6,519.85-9,780.27-2,137.75

Finding the Fourth Proportional to 6,519.85, 9,780.27 and 2,137.75

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Solution

The fourth proportional to 6,519.85, 9,780.27 and 2,137.75 is: 3,206.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.85 : 9,780.27 = 2,137.75 : x
  2. Step 2: Convert to fraction form
    6,519.85/9,780.27 = 2,137.75/x
  3. Step 3: Cross multiply
    6,519.85x = 9,780.27 × 2,137.75
  4. Step 4: Simplify right side
    6,519.85x = 20,907,723.29
  5. Step 5: Solve for x
    x = 20,907,723.29/6,519.85
  6. Step 6: Final answer
    x = 3,206.78

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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.