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Finding the Fourth Proportional to 3,992.31, 5,979.56 and 2,894.16

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Solution

The fourth proportional to 3,992.31, 5,979.56 and 2,894.16 is: 4,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.31 : 5,979.56 = 2,894.16 : x
  2. Step 2: Convert to fraction form
    3,992.31/5,979.56 = 2,894.16/x
  3. Step 3: Cross multiply
    3,992.31x = 5,979.56 × 2,894.16
  4. Step 4: Simplify right side
    3,992.31x = 17,305,788.90
  5. Step 5: Solve for x
    x = 17,305,788.90/3,992.31
  6. Step 6: Final answer
    x = 4,334.78

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1.5x scale

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.