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Finding the Third Proportional to 2,680 and 4,186.50

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Solution

The third proportional to 2,680 and 4,186.50 is: 6,539.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680 : 4,186.50 = 4,186.50 : x
  2. Step 2: Convert to fraction form
    2,680/4,186.50 = 4,186.50/x
  3. Step 3: Cross multiply
    2,680x = 4,186.50 × 4,186.50
  4. Step 4: Simplify right side
    2,680x = 17,526,782.25
  5. Step 5: Solve for x
    x = 17,526,782.25/2,680
  6. Step 6: Final answer
    x = 6,539.84

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.