Home / 3,418.88-5,128.31-1,110.38

Finding the Fourth Proportional to 3,418.88, 5,128.31 and 1,110.38

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Solution

The fourth proportional to 3,418.88, 5,128.31 and 1,110.38 is: 1,665.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.88 : 5,128.31 = 1,110.38 : x
  2. Step 2: Convert to fraction form
    3,418.88/5,128.31 = 1,110.38/x
  3. Step 3: Cross multiply
    3,418.88x = 5,128.31 × 1,110.38
  4. Step 4: Simplify right side
    3,418.88x = 5,694,349.99
  5. Step 5: Solve for x
    x = 5,694,349.99/3,418.88
  6. Step 6: Final answer
    x = 1,665.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.