Home / 3,899.97-5,382.05-2,131.54

Finding the Fourth Proportional to 3,899.97, 5,382.05 and 2,131.54

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Solution

The fourth proportional to 3,899.97, 5,382.05 and 2,131.54 is: 2,941.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.97 : 5,382.05 = 2,131.54 : x
  2. Step 2: Convert to fraction form
    3,899.97/5,382.05 = 2,131.54/x
  3. Step 3: Cross multiply
    3,899.97x = 5,382.05 × 2,131.54
  4. Step 4: Simplify right side
    3,899.97x = 11,472,030.74
  5. Step 5: Solve for x
    x = 11,472,030.74/3,899.97
  6. Step 6: Final answer
    x = 2,941.57

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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.