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Finding the Fourth Proportional to 7,938.99, 11,910.11 and 2,745.27

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Solution

The fourth proportional to 7,938.99, 11,910.11 and 2,745.27 is: 4,118.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.99 : 11,910.11 = 2,745.27 : x
  2. Step 2: Convert to fraction form
    7,938.99/11,910.11 = 2,745.27/x
  3. Step 3: Cross multiply
    7,938.99x = 11,910.11 × 2,745.27
  4. Step 4: Simplify right side
    7,938.99x = 32,696,453.95
  5. Step 5: Solve for x
    x = 32,696,453.95/7,938.99
  6. Step 6: Final answer
    x = 4,118.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.