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Finding the Third Proportional to 2,420 and 4,858

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Solution

The third proportional to 2,420 and 4,858 is: 9,752.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420 : 4,858 = 4,858 : x
  2. Step 2: Convert to fraction form
    2,420/4,858 = 4,858/x
  3. Step 3: Cross multiply
    2,420x = 4,858 × 4,858
  4. Step 4: Simplify right side
    2,420x = 23,600,164
  5. Step 5: Solve for x
    x = 23,600,164/2,420
  6. Step 6: Final answer
    x = 9,752.13

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Why These Related Problems?

These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.