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Finding the Third Proportional to 2,490 and 2,832

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Solution

The third proportional to 2,490 and 2,832 is: 3,220.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490 : 2,832 = 2,832 : x
  2. Step 2: Convert to fraction form
    2,490/2,832 = 2,832/x
  3. Step 3: Cross multiply
    2,490x = 2,832 × 2,832
  4. Step 4: Simplify right side
    2,490x = 8,020,224
  5. Step 5: Solve for x
    x = 8,020,224/2,490
  6. Step 6: Final answer
    x = 3,220.97

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.