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Finding the Fourth Proportional to 8,259.99, 11,383.04 and 8,108.15

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Solution

The fourth proportional to 8,259.99, 11,383.04 and 8,108.15 is: 11,173.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.99 : 11,383.04 = 8,108.15 : x
  2. Step 2: Convert to fraction form
    8,259.99/11,383.04 = 8,108.15/x
  3. Step 3: Cross multiply
    8,259.99x = 11,383.04 × 8,108.15
  4. Step 4: Simplify right side
    8,259.99x = 92,295,383.69
  5. Step 5: Solve for x
    x = 92,295,383.69/8,259.99
  6. Step 6: Final answer
    x = 11,173.79

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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.