Home / 5,456.43-8,179.79-1,992.87

Finding the Fourth Proportional to 5,456.43, 8,179.79 and 1,992.87

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Solution

The fourth proportional to 5,456.43, 8,179.79 and 1,992.87 is: 2,987.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.43 : 8,179.79 = 1,992.87 : x
  2. Step 2: Convert to fraction form
    5,456.43/8,179.79 = 1,992.87/x
  3. Step 3: Cross multiply
    5,456.43x = 8,179.79 × 1,992.87
  4. Step 4: Simplify right side
    5,456.43x = 16,301,248.13
  5. Step 5: Solve for x
    x = 16,301,248.13/5,456.43
  6. Step 6: Final answer
    x = 2,987.53

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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.