Home / 3,843.62-5,304.28-2,165.12

Finding the Fourth Proportional to 3,843.62, 5,304.28 and 2,165.12

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Solution

The fourth proportional to 3,843.62, 5,304.28 and 2,165.12 is: 2,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843.62 : 5,304.28 = 2,165.12 : x
  2. Step 2: Convert to fraction form
    3,843.62/5,304.28 = 2,165.12/x
  3. Step 3: Cross multiply
    3,843.62x = 5,304.28 × 2,165.12
  4. Step 4: Simplify right side
    3,843.62x = 11,484,402.71
  5. Step 5: Solve for x
    x = 11,484,402.71/3,843.62
  6. Step 6: Final answer
    x = 2,987.91

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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.