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Finding the Third Proportional to 1,800 and 4,860

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Solution

The third proportional to 1,800 and 4,860 is: 13,122

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800 : 4,860 = 4,860 : x
  2. Step 2: Convert to fraction form
    1,800/4,860 = 4,860/x
  3. Step 3: Cross multiply
    1,800x = 4,860 × 4,860
  4. Step 4: Simplify right side
    1,800x = 23,619,600
  5. Step 5: Solve for x
    x = 23,619,600/1,800
  6. Step 6: Final answer
    x = 13,122

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.