Home / 3,899.49-5,381.31-2,198.02

Finding the Fourth Proportional to 3,899.49, 5,381.31 and 2,198.02

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Solution

The fourth proportional to 3,899.49, 5,381.31 and 2,198.02 is: 3,033.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.49 : 5,381.31 = 2,198.02 : x
  2. Step 2: Convert to fraction form
    3,899.49/5,381.31 = 2,198.02/x
  3. Step 3: Cross multiply
    3,899.49x = 5,381.31 × 2,198.02
  4. Step 4: Simplify right side
    3,899.49x = 11,828,230.89
  5. Step 5: Solve for x
    x = 11,828,230.89/3,899.49
  6. Step 6: Final answer
    x = 3,033.28

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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.