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Finding the Third Proportional to 2,560 and 4,940

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Solution

The third proportional to 2,560 and 4,940 is: 9,532.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,560 : 4,940 = 4,940 : x
  2. Step 2: Convert to fraction form
    2,560/4,940 = 4,940/x
  3. Step 3: Cross multiply
    2,560x = 4,940 × 4,940
  4. Step 4: Simplify right side
    2,560x = 24,403,600
  5. Step 5: Solve for x
    x = 24,403,600/2,560
  6. Step 6: Final answer
    x = 9,532.66

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Why These Related Problems?

These problems maintain the same ratio (1.93) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.