Home / 3,789.72-5,228.13-2,217.12

Finding the Fourth Proportional to 3,789.72, 5,228.13 and 2,217.12

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Solution

The fourth proportional to 3,789.72, 5,228.13 and 2,217.12 is: 3,058.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.72 : 5,228.13 = 2,217.12 : x
  2. Step 2: Convert to fraction form
    3,789.72/5,228.13 = 2,217.12/x
  3. Step 3: Cross multiply
    3,789.72x = 5,228.13 × 2,217.12
  4. Step 4: Simplify right side
    3,789.72x = 11,591,391.59
  5. Step 5: Solve for x
    x = 11,591,391.59/3,789.72
  6. Step 6: Final answer
    x = 3,058.64

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1.5x scale

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.