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Finding the Third Proportional to 6,490 and 13,628

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Solution

The third proportional to 6,490 and 13,628 is: 28,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490 : 13,628 = 13,628 : x
  2. Step 2: Convert to fraction form
    6,490/13,628 = 13,628/x
  3. Step 3: Cross multiply
    6,490x = 13,628 × 13,628
  4. Step 4: Simplify right side
    6,490x = 185,722,384
  5. Step 5: Solve for x
    x = 185,722,384/6,490
  6. Step 6: Final answer
    x = 28,616.70

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.