Home / 1,418.88-2,131.92-1,361.28

Finding the Fourth Proportional to 1,418.88, 2,131.92 and 1,361.28

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Solution

The fourth proportional to 1,418.88, 2,131.92 and 1,361.28 is: 2,045.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.88 : 2,131.92 = 1,361.28 : x
  2. Step 2: Convert to fraction form
    1,418.88/2,131.92 = 1,361.28/x
  3. Step 3: Cross multiply
    1,418.88x = 2,131.92 × 1,361.28
  4. Step 4: Simplify right side
    1,418.88x = 2,902,140.06
  5. Step 5: Solve for x
    x = 2,902,140.06/1,418.88
  6. Step 6: Final answer
    x = 2,045.37

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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.