Home / 3,826.25-5,278.91-2,147.42

Finding the Fourth Proportional to 3,826.25, 5,278.91 and 2,147.42

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Solution

The fourth proportional to 3,826.25, 5,278.91 and 2,147.42 is: 2,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.25 : 5,278.91 = 2,147.42 : x
  2. Step 2: Convert to fraction form
    3,826.25/5,278.91 = 2,147.42/x
  3. Step 3: Cross multiply
    3,826.25x = 5,278.91 × 2,147.42
  4. Step 4: Simplify right side
    3,826.25x = 11,336,039.37
  5. Step 5: Solve for x
    x = 11,336,039.37/3,826.25
  6. Step 6: Final answer
    x = 2,962.70

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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.