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Finding the Third Proportional to 3,586.78 and 5,456.11

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Solution

The third proportional to 3,586.78 and 5,456.11 is: 8,299.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.78 : 5,456.11 = 5,456.11 : x
  2. Step 2: Convert to fraction form
    3,586.78/5,456.11 = 5,456.11/x
  3. Step 3: Cross multiply
    3,586.78x = 5,456.11 × 5,456.11
  4. Step 4: Simplify right side
    3,586.78x = 29,769,129.51
  5. Step 5: Solve for x
    x = 29,769,129.51/3,586.78
  6. Step 6: Final answer
    x = 8,299.68

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.