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Finding the Fourth Proportional to 11,400, 17,100.96 and 3,192

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Solution

The fourth proportional to 11,400, 17,100.96 and 3,192 is: 4,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,400 : 17,100.96 = 3,192 : x
  2. Step 2: Convert to fraction form
    11,400/17,100.96 = 3,192/x
  3. Step 3: Cross multiply
    11,400x = 17,100.96 × 3,192
  4. Step 4: Simplify right side
    11,400x = 54,586,264.32
  5. Step 5: Solve for x
    x = 54,586,264.32/11,400
  6. Step 6: Final answer
    x = 4,788.27

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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.