Home / 3,825.68-5,279.54-2,147.21

Finding the Fourth Proportional to 3,825.68, 5,279.54 and 2,147.21

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Solution

The fourth proportional to 3,825.68, 5,279.54 and 2,147.21 is: 2,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.68 : 5,279.54 = 2,147.21 : x
  2. Step 2: Convert to fraction form
    3,825.68/5,279.54 = 2,147.21/x
  3. Step 3: Cross multiply
    3,825.68x = 5,279.54 × 2,147.21
  4. Step 4: Simplify right side
    3,825.68x = 11,336,293.45
  5. Step 5: Solve for x
    x = 11,336,293.45/3,825.68
  6. Step 6: Final answer
    x = 2,963.21

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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.