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Finding the Third Proportional to 3,240 and 5,196.66

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Solution

The third proportional to 3,240 and 5,196.66 is: 8,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240 : 5,196.66 = 5,196.66 : x
  2. Step 2: Convert to fraction form
    3,240/5,196.66 = 5,196.66/x
  3. Step 3: Cross multiply
    3,240x = 5,196.66 × 5,196.66
  4. Step 4: Simplify right side
    3,240x = 27,005,236.18
  5. Step 5: Solve for x
    x = 27,005,236.18/3,240
  6. Step 6: Final answer
    x = 8,334.95

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.