Home / 7,131.38-10,687.64-5,163.59

Finding the Fourth Proportional to 7,131.38, 10,687.64 and 5,163.59

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Solution

The fourth proportional to 7,131.38, 10,687.64 and 5,163.59 is: 7,738.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.38 : 10,687.64 = 5,163.59 : x
  2. Step 2: Convert to fraction form
    7,131.38/10,687.64 = 5,163.59/x
  3. Step 3: Cross multiply
    7,131.38x = 10,687.64 × 5,163.59
  4. Step 4: Simplify right side
    7,131.38x = 55,186,511.77
  5. Step 5: Solve for x
    x = 55,186,511.77/7,131.38
  6. Step 6: Final answer
    x = 7,738.55

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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.