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Finding the Fourth Proportional to 11,486.94, 17,230.41 and 3,278.94

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Solution

The fourth proportional to 11,486.94, 17,230.41 and 3,278.94 is: 4,918.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,486.94 : 17,230.41 = 3,278.94 : x
  2. Step 2: Convert to fraction form
    11,486.94/17,230.41 = 3,278.94/x
  3. Step 3: Cross multiply
    11,486.94x = 17,230.41 × 3,278.94
  4. Step 4: Simplify right side
    11,486.94x = 56,497,480.57
  5. Step 5: Solve for x
    x = 56,497,480.57/11,486.94
  6. Step 6: Final answer
    x = 4,918.41

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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.