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Finding the Fourth Proportional to 8,109.50, 11,191.12 and 4,383.50

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Solution

The fourth proportional to 8,109.50, 11,191.12 and 4,383.50 is: 6,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.50 : 11,191.12 = 4,383.50 : x
  2. Step 2: Convert to fraction form
    8,109.50/11,191.12 = 4,383.50/x
  3. Step 3: Cross multiply
    8,109.50x = 11,191.12 × 4,383.50
  4. Step 4: Simplify right side
    8,109.50x = 49,056,274.52
  5. Step 5: Solve for x
    x = 49,056,274.52/8,109.50
  6. Step 6: Final answer
    x = 6,049.24

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Double scale
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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.