Home / 3,826.81-5,279.68-2,147.99

Finding the Fourth Proportional to 3,826.81, 5,279.68 and 2,147.99

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Solution

The fourth proportional to 3,826.81, 5,279.68 and 2,147.99 is: 2,963.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.81 : 5,279.68 = 2,147.99 : x
  2. Step 2: Convert to fraction form
    3,826.81/5,279.68 = 2,147.99/x
  3. Step 3: Cross multiply
    3,826.81x = 5,279.68 × 2,147.99
  4. Step 4: Simplify right side
    3,826.81x = 11,340,676.13
  5. Step 5: Solve for x
    x = 11,340,676.13/3,826.81
  6. Step 6: Final answer
    x = 2,963.48

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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.