Home / 3,853.91-5,318.31-2,175.28

Finding the Fourth Proportional to 3,853.91, 5,318.31 and 2,175.28

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Solution

The fourth proportional to 3,853.91, 5,318.31 and 2,175.28 is: 3,001.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.91 : 5,318.31 = 2,175.28 : x
  2. Step 2: Convert to fraction form
    3,853.91/5,318.31 = 2,175.28/x
  3. Step 3: Cross multiply
    3,853.91x = 5,318.31 × 2,175.28
  4. Step 4: Simplify right side
    3,853.91x = 11,568,808.24
  5. Step 5: Solve for x
    x = 11,568,808.24/3,853.91
  6. Step 6: Final answer
    x = 3,001.83

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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.