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Finding the Third Proportional to 3,403.69 and 6,643.69

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Solution

The third proportional to 3,403.69 and 6,643.69 is: 12,967.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.69 : 6,643.69 = 6,643.69 : x
  2. Step 2: Convert to fraction form
    3,403.69/6,643.69 = 6,643.69/x
  3. Step 3: Cross multiply
    3,403.69x = 6,643.69 × 6,643.69
  4. Step 4: Simplify right side
    3,403.69x = 44,138,583.60
  5. Step 5: Solve for x
    x = 44,138,583.60/3,403.69
  6. Step 6: Final answer
    x = 12,967.87

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.