Home / 3,843.20-5,304.08-2,164.68

Finding the Fourth Proportional to 3,843.20, 5,304.08 and 2,164.68

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Solution

The fourth proportional to 3,843.20, 5,304.08 and 2,164.68 is: 2,987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843.20 : 5,304.08 = 2,164.68 : x
  2. Step 2: Convert to fraction form
    3,843.20/5,304.08 = 2,164.68/x
  3. Step 3: Cross multiply
    3,843.20x = 5,304.08 × 2,164.68
  4. Step 4: Simplify right side
    3,843.20x = 11,481,635.89
  5. Step 5: Solve for x
    x = 11,481,635.89/3,843.20
  6. Step 6: Final answer
    x = 2,987.52

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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.