Home / 6,491.22-9,739.14-2,108.69

Finding the Fourth Proportional to 6,491.22, 9,739.14 and 2,108.69

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Solution

The fourth proportional to 6,491.22, 9,739.14 and 2,108.69 is: 3,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491.22 : 9,739.14 = 2,108.69 : x
  2. Step 2: Convert to fraction form
    6,491.22/9,739.14 = 2,108.69/x
  3. Step 3: Cross multiply
    6,491.22x = 9,739.14 × 2,108.69
  4. Step 4: Simplify right side
    6,491.22x = 20,536,778.43
  5. Step 5: Solve for x
    x = 20,536,778.43/6,491.22
  6. Step 6: Final answer
    x = 3,163.78

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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.