Home / 3,940.75-5,433.78-2,682.52

Finding the Fourth Proportional to 3,940.75, 5,433.78 and 2,682.52

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Solution

The fourth proportional to 3,940.75, 5,433.78 and 2,682.52 is: 3,698.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.75 : 5,433.78 = 2,682.52 : x
  2. Step 2: Convert to fraction form
    3,940.75/5,433.78 = 2,682.52/x
  3. Step 3: Cross multiply
    3,940.75x = 5,433.78 × 2,682.52
  4. Step 4: Simplify right side
    3,940.75x = 14,576,220.00
  5. Step 5: Solve for x
    x = 14,576,220.00/3,940.75
  6. Step 6: Final answer
    x = 3,698.84

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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.