Home / 11,910.78-17,869.75-3,591.07

Finding the Fourth Proportional to 11,910.78, 17,869.75 and 3,591.07

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Solution

The fourth proportional to 11,910.78, 17,869.75 and 3,591.07 is: 5,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.78 : 17,869.75 = 3,591.07 : x
  2. Step 2: Convert to fraction form
    11,910.78/17,869.75 = 3,591.07/x
  3. Step 3: Cross multiply
    11,910.78x = 17,869.75 × 3,591.07
  4. Step 4: Simplify right side
    11,910.78x = 64,171,523.13
  5. Step 5: Solve for x
    x = 64,171,523.13/11,910.78
  6. Step 6: Final answer
    x = 5,387.68

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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.