Home / 8,138.88-11,223.76-5,616.96

Finding the Fourth Proportional to 8,138.88, 11,223.76 and 5,616.96

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Solution

The fourth proportional to 8,138.88, 11,223.76 and 5,616.96 is: 7,745.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.88 : 11,223.76 = 5,616.96 : x
  2. Step 2: Convert to fraction form
    8,138.88/11,223.76 = 5,616.96/x
  3. Step 3: Cross multiply
    8,138.88x = 11,223.76 × 5,616.96
  4. Step 4: Simplify right side
    8,138.88x = 63,043,410.97
  5. Step 5: Solve for x
    x = 63,043,410.97/8,138.88
  6. Step 6: Final answer
    x = 7,745.96

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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.