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Finding the Third Proportional to 2,480 and 3,489

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Solution

The third proportional to 2,480 and 3,489 is: 4,908.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480 : 3,489 = 3,489 : x
  2. Step 2: Convert to fraction form
    2,480/3,489 = 3,489/x
  3. Step 3: Cross multiply
    2,480x = 3,489 × 3,489
  4. Step 4: Simplify right side
    2,480x = 12,173,121
  5. Step 5: Solve for x
    x = 12,173,121/2,480
  6. Step 6: Final answer
    x = 4,908.52

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.