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Finding the Third Proportional to 1,679.63 and 3,316.69

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Solution

The third proportional to 1,679.63 and 3,316.69 is: 6,549.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.63 : 3,316.69 = 3,316.69 : x
  2. Step 2: Convert to fraction form
    1,679.63/3,316.69 = 3,316.69/x
  3. Step 3: Cross multiply
    1,679.63x = 3,316.69 × 3,316.69
  4. Step 4: Simplify right side
    1,679.63x = 11,000,415.97
  5. Step 5: Solve for x
    x = 11,000,415.97/1,679.63
  6. Step 6: Final answer
    x = 6,549.33

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.