Home / 1,272.24-1,908.75-1,163.70

Finding the Fourth Proportional to 1,272.24, 1,908.75 and 1,163.70

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Solution

The fourth proportional to 1,272.24, 1,908.75 and 1,163.70 is: 1,745.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.24 : 1,908.75 = 1,163.70 : x
  2. Step 2: Convert to fraction form
    1,272.24/1,908.75 = 1,163.70/x
  3. Step 3: Cross multiply
    1,272.24x = 1,908.75 × 1,163.70
  4. Step 4: Simplify right side
    1,272.24x = 2,221,212.38
  5. Step 5: Solve for x
    x = 2,221,212.38/1,272.24
  6. Step 6: Final answer
    x = 1,745.91

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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.