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Finding the Third Proportional to 3,586.78 and 5,539.64

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Solution

The third proportional to 3,586.78 and 5,539.64 is: 8,555.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.78 : 5,539.64 = 5,539.64 : x
  2. Step 2: Convert to fraction form
    3,586.78/5,539.64 = 5,539.64/x
  3. Step 3: Cross multiply
    3,586.78x = 5,539.64 × 5,539.64
  4. Step 4: Simplify right side
    3,586.78x = 30,687,618.25
  5. Step 5: Solve for x
    x = 30,687,618.25/3,586.78
  6. Step 6: Final answer
    x = 8,555.75

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.