Home / 3,943.80-5,442.49-2,175.47

Finding the Fourth Proportional to 3,943.80, 5,442.49 and 2,175.47

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Solution

The fourth proportional to 3,943.80, 5,442.49 and 2,175.47 is: 3,002.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.80 : 5,442.49 = 2,175.47 : x
  2. Step 2: Convert to fraction form
    3,943.80/5,442.49 = 2,175.47/x
  3. Step 3: Cross multiply
    3,943.80x = 5,442.49 × 2,175.47
  4. Step 4: Simplify right side
    3,943.80x = 11,839,973.72
  5. Step 5: Solve for x
    x = 11,839,973.72/3,943.80
  6. Step 6: Final answer
    x = 3,002.17

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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.