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Finding the Third Proportional to 1,620 and 3,718

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Solution

The third proportional to 1,620 and 3,718 is: 8,533.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620 : 3,718 = 3,718 : x
  2. Step 2: Convert to fraction form
    1,620/3,718 = 3,718/x
  3. Step 3: Cross multiply
    1,620x = 3,718 × 3,718
  4. Step 4: Simplify right side
    1,620x = 13,823,524
  5. Step 5: Solve for x
    x = 13,823,524/1,620
  6. Step 6: Final answer
    x = 8,533.04

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.