Home / 3,129.26-4,717.92-2,917.76

Finding the Fourth Proportional to 3,129.26, 4,717.92 and 2,917.76

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Solution

The fourth proportional to 3,129.26, 4,717.92 and 2,917.76 is: 4,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.26 : 4,717.92 = 2,917.76 : x
  2. Step 2: Convert to fraction form
    3,129.26/4,717.92 = 2,917.76/x
  3. Step 3: Cross multiply
    3,129.26x = 4,717.92 × 2,917.76
  4. Step 4: Simplify right side
    3,129.26x = 13,765,758.26
  5. Step 5: Solve for x
    x = 13,765,758.26/3,129.26
  6. Step 6: Final answer
    x = 4,399.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.