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Finding the Third Proportional to 2,685 and 5,680.50

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Solution

The third proportional to 2,685 and 5,680.50 is: 12,017.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685 : 5,680.50 = 5,680.50 : x
  2. Step 2: Convert to fraction form
    2,685/5,680.50 = 5,680.50/x
  3. Step 3: Cross multiply
    2,685x = 5,680.50 × 5,680.50
  4. Step 4: Simplify right side
    2,685x = 32,268,080.25
  5. Step 5: Solve for x
    x = 32,268,080.25/2,685
  6. Step 6: Final answer
    x = 12,017.91

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.