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Finding the Fourth Proportional to 8,109.84, 11,191.53 and 4,524.78

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Solution

The fourth proportional to 8,109.84, 11,191.53 and 4,524.78 is: 6,244.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.84 : 11,191.53 = 4,524.78 : x
  2. Step 2: Convert to fraction form
    8,109.84/11,191.53 = 4,524.78/x
  3. Step 3: Cross multiply
    8,109.84x = 11,191.53 × 4,524.78
  4. Step 4: Simplify right side
    8,109.84x = 50,639,211.11
  5. Step 5: Solve for x
    x = 50,639,211.11/8,109.84
  6. Step 6: Final answer
    x = 6,244.17

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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.