Home / 6,540.21-9,796.77-3,198.40

Finding the Fourth Proportional to 6,540.21, 9,796.77 and 3,198.40

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Solution

The fourth proportional to 6,540.21, 9,796.77 and 3,198.40 is: 4,790.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,540.21 : 9,796.77 = 3,198.40 : x
  2. Step 2: Convert to fraction form
    6,540.21/9,796.77 = 3,198.40/x
  3. Step 3: Cross multiply
    6,540.21x = 9,796.77 × 3,198.40
  4. Step 4: Simplify right side
    6,540.21x = 31,333,964.68
  5. Step 5: Solve for x
    x = 31,333,964.68/6,540.21
  6. Step 6: Final answer
    x = 4,790.97

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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.