Home / 3,942.78-5,441.46-2,616

Finding the Fourth Proportional to 3,942.78, 5,441.46 and 2,616

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Solution

The fourth proportional to 3,942.78, 5,441.46 and 2,616 is: 3,610.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.78 : 5,441.46 = 2,616 : x
  2. Step 2: Convert to fraction form
    3,942.78/5,441.46 = 2,616/x
  3. Step 3: Cross multiply
    3,942.78x = 5,441.46 × 2,616
  4. Step 4: Simplify right side
    3,942.78x = 14,234,859.36
  5. Step 5: Solve for x
    x = 14,234,859.36/3,942.78
  6. Step 6: Final answer
    x = 3,610.36

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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.