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Finding the Third Proportional to 3,210.75 and 4,456.69

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Solution

The third proportional to 3,210.75 and 4,456.69 is: 6,186.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.75 : 4,456.69 = 4,456.69 : x
  2. Step 2: Convert to fraction form
    3,210.75/4,456.69 = 4,456.69/x
  3. Step 3: Cross multiply
    3,210.75x = 4,456.69 × 4,456.69
  4. Step 4: Simplify right side
    3,210.75x = 19,862,063.47
  5. Step 5: Solve for x
    x = 19,862,063.47/3,210.75
  6. Step 6: Final answer
    x = 6,186.11

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.