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Finding the Fourth Proportional to 2,021, 2,789.04 and 1,193

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Solution

The fourth proportional to 2,021, 2,789.04 and 1,193 is: 1,646.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021 : 2,789.04 = 1,193 : x
  2. Step 2: Convert to fraction form
    2,021/2,789.04 = 1,193/x
  3. Step 3: Cross multiply
    2,021x = 2,789.04 × 1,193
  4. Step 4: Simplify right side
    2,021x = 3,327,324.72
  5. Step 5: Solve for x
    x = 3,327,324.72/2,021
  6. Step 6: Final answer
    x = 1,646.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.