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Finding the Third Proportional to 3,556.13 and 8,310.56

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Solution

The third proportional to 3,556.13 and 8,310.56 is: 19,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.13 : 8,310.56 = 8,310.56 : x
  2. Step 2: Convert to fraction form
    3,556.13/8,310.56 = 8,310.56/x
  3. Step 3: Cross multiply
    3,556.13x = 8,310.56 × 8,310.56
  4. Step 4: Simplify right side
    3,556.13x = 69,065,449.07
  5. Step 5: Solve for x
    x = 69,065,449.07/3,556.13
  6. Step 6: Final answer
    x = 19,421.55

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.