Home / 2,749.75-4,121.48-1,105.25

Finding the Fourth Proportional to 2,749.75, 4,121.48 and 1,105.25

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Solution

The fourth proportional to 2,749.75, 4,121.48 and 1,105.25 is: 1,656.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.75 : 4,121.48 = 1,105.25 : x
  2. Step 2: Convert to fraction form
    2,749.75/4,121.48 = 1,105.25/x
  3. Step 3: Cross multiply
    2,749.75x = 4,121.48 × 1,105.25
  4. Step 4: Simplify right side
    2,749.75x = 4,555,247.93
  5. Step 5: Solve for x
    x = 4,555,247.93/2,749.75
  6. Step 6: Final answer
    x = 1,656.61

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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.