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Finding the Third Proportional to 3,420.56 and 6,309.56

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Solution

The third proportional to 3,420.56 and 6,309.56 is: 11,638.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.56 : 6,309.56 = 6,309.56 : x
  2. Step 2: Convert to fraction form
    3,420.56/6,309.56 = 6,309.56/x
  3. Step 3: Cross multiply
    3,420.56x = 6,309.56 × 6,309.56
  4. Step 4: Simplify right side
    3,420.56x = 39,810,578.94
  5. Step 5: Solve for x
    x = 39,810,578.94/3,420.56
  6. Step 6: Final answer
    x = 11,638.61

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.