Home / 3,830.72-5,286.06-2,151.99

Finding the Fourth Proportional to 3,830.72, 5,286.06 and 2,151.99

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Solution

The fourth proportional to 3,830.72, 5,286.06 and 2,151.99 is: 2,969.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.72 : 5,286.06 = 2,151.99 : x
  2. Step 2: Convert to fraction form
    3,830.72/5,286.06 = 2,151.99/x
  3. Step 3: Cross multiply
    3,830.72x = 5,286.06 × 2,151.99
  4. Step 4: Simplify right side
    3,830.72x = 11,375,548.26
  5. Step 5: Solve for x
    x = 11,375,548.26/3,830.72
  6. Step 6: Final answer
    x = 2,969.56

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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.