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Finding the Third Proportional to 2,578 and 4,660

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Solution

The third proportional to 2,578 and 4,660 is: 8,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578 : 4,660 = 4,660 : x
  2. Step 2: Convert to fraction form
    2,578/4,660 = 4,660/x
  3. Step 3: Cross multiply
    2,578x = 4,660 × 4,660
  4. Step 4: Simplify right side
    2,578x = 21,715,600
  5. Step 5: Solve for x
    x = 21,715,600/2,578
  6. Step 6: Final answer
    x = 8,423.43

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.