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Finding the Third Proportional to 1,655 and 3,630

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Solution

The third proportional to 1,655 and 3,630 is: 7,961.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655 : 3,630 = 3,630 : x
  2. Step 2: Convert to fraction form
    1,655/3,630 = 3,630/x
  3. Step 3: Cross multiply
    1,655x = 3,630 × 3,630
  4. Step 4: Simplify right side
    1,655x = 13,176,900
  5. Step 5: Solve for x
    x = 13,176,900/1,655
  6. Step 6: Final answer
    x = 7,961.87

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.