Home / 8,109.24-11,161.80-5,747.28

Finding the Fourth Proportional to 8,109.24, 11,161.80 and 5,747.28

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Solution

The fourth proportional to 8,109.24, 11,161.80 and 5,747.28 is: 7,910.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.24 : 11,161.80 = 5,747.28 : x
  2. Step 2: Convert to fraction form
    8,109.24/11,161.80 = 5,747.28/x
  3. Step 3: Cross multiply
    8,109.24x = 11,161.80 × 5,747.28
  4. Step 4: Simplify right side
    8,109.24x = 64,149,989.90
  5. Step 5: Solve for x
    x = 64,149,989.90/8,109.24
  6. Step 6: Final answer
    x = 7,910.73

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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.