Home / 3,991.26-5,506.44-2,418.78

Finding the Fourth Proportional to 3,991.26, 5,506.44 and 2,418.78

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Solution

The fourth proportional to 3,991.26, 5,506.44 and 2,418.78 is: 3,337.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.26 : 5,506.44 = 2,418.78 : x
  2. Step 2: Convert to fraction form
    3,991.26/5,506.44 = 2,418.78/x
  3. Step 3: Cross multiply
    3,991.26x = 5,506.44 × 2,418.78
  4. Step 4: Simplify right side
    3,991.26x = 13,318,866.94
  5. Step 5: Solve for x
    x = 13,318,866.94/3,991.26
  6. Step 6: Final answer
    x = 3,337.01

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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.