Home / 3,887.82-5,365.19-2,119.43

Finding the Fourth Proportional to 3,887.82, 5,365.19 and 2,119.43

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Solution

The fourth proportional to 3,887.82, 5,365.19 and 2,119.43 is: 2,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.82 : 5,365.19 = 2,119.43 : x
  2. Step 2: Convert to fraction form
    3,887.82/5,365.19 = 2,119.43/x
  3. Step 3: Cross multiply
    3,887.82x = 5,365.19 × 2,119.43
  4. Step 4: Simplify right side
    3,887.82x = 11,371,107.22
  5. Step 5: Solve for x
    x = 11,371,107.22/3,887.82
  6. Step 6: Final answer
    x = 2,924.80

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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.