Home / 3,825.85-5,279.52-2,147.62

Finding the Fourth Proportional to 3,825.85, 5,279.52 and 2,147.62

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Solution

The fourth proportional to 3,825.85, 5,279.52 and 2,147.62 is: 2,963.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.85 : 5,279.52 = 2,147.62 : x
  2. Step 2: Convert to fraction form
    3,825.85/5,279.52 = 2,147.62/x
  3. Step 3: Cross multiply
    3,825.85x = 5,279.52 × 2,147.62
  4. Step 4: Simplify right side
    3,825.85x = 11,338,402.74
  5. Step 5: Solve for x
    x = 11,338,402.74/3,825.85
  6. Step 6: Final answer
    x = 2,963.63

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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.