Home / 7,131.87-10,692.45-2,198.61

Finding the Fourth Proportional to 7,131.87, 10,692.45 and 2,198.61

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Solution

The fourth proportional to 7,131.87, 10,692.45 and 2,198.61 is: 3,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.87 : 10,692.45 = 2,198.61 : x
  2. Step 2: Convert to fraction form
    7,131.87/10,692.45 = 2,198.61/x
  3. Step 3: Cross multiply
    7,131.87x = 10,692.45 × 2,198.61
  4. Step 4: Simplify right side
    7,131.87x = 23,508,527.49
  5. Step 5: Solve for x
    x = 23,508,527.49/7,131.87
  6. Step 6: Final answer
    x = 3,296.26

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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.