Home / 3,101.26-4,279.78-1,704

Finding the Fourth Proportional to 3,101.26, 4,279.78 and 1,704

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Solution

The fourth proportional to 3,101.26, 4,279.78 and 1,704 is: 2,351.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.26 : 4,279.78 = 1,704 : x
  2. Step 2: Convert to fraction form
    3,101.26/4,279.78 = 1,704/x
  3. Step 3: Cross multiply
    3,101.26x = 4,279.78 × 1,704
  4. Step 4: Simplify right side
    3,101.26x = 7,292,745.12
  5. Step 5: Solve for x
    x = 7,292,745.12/3,101.26
  6. Step 6: Final answer
    x = 2,351.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.