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Finding the Third Proportional to 1,024 and 2,240

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Solution

The third proportional to 1,024 and 2,240 is: 4,900

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024 : 2,240 = 2,240 : x
  2. Step 2: Convert to fraction form
    1,024/2,240 = 2,240/x
  3. Step 3: Cross multiply
    1,024x = 2,240 × 2,240
  4. Step 4: Simplify right side
    1,024x = 5,017,600
  5. Step 5: Solve for x
    x = 5,017,600/1,024
  6. Step 6: Final answer
    x = 4,900

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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.