Home / 3,839.82-5,298.97-2,161.25

Finding the Fourth Proportional to 3,839.82, 5,298.97 and 2,161.25

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Solution

The fourth proportional to 3,839.82, 5,298.97 and 2,161.25 is: 2,982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.82 : 5,298.97 = 2,161.25 : x
  2. Step 2: Convert to fraction form
    3,839.82/5,298.97 = 2,161.25/x
  3. Step 3: Cross multiply
    3,839.82x = 5,298.97 × 2,161.25
  4. Step 4: Simplify right side
    3,839.82x = 11,452,388.11
  5. Step 5: Solve for x
    x = 11,452,388.11/3,839.82
  6. Step 6: Final answer
    x = 2,982.54

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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.