Home / 3,826.64-5,279.56-2,147.80

Finding the Fourth Proportional to 3,826.64, 5,279.56 and 2,147.80

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Solution

The fourth proportional to 3,826.64, 5,279.56 and 2,147.80 is: 2,963.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.64 : 5,279.56 = 2,147.80 : x
  2. Step 2: Convert to fraction form
    3,826.64/5,279.56 = 2,147.80/x
  3. Step 3: Cross multiply
    3,826.64x = 5,279.56 × 2,147.80
  4. Step 4: Simplify right side
    3,826.64x = 11,339,438.97
  5. Step 5: Solve for x
    x = 11,339,438.97/3,826.64
  6. Step 6: Final answer
    x = 2,963.29

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1.5x scale

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.