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Finding the Third Proportional to 1,819.55 and 4,212.84

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Solution

The third proportional to 1,819.55 and 4,212.84 is: 9,754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.55 : 4,212.84 = 4,212.84 : x
  2. Step 2: Convert to fraction form
    1,819.55/4,212.84 = 4,212.84/x
  3. Step 3: Cross multiply
    1,819.55x = 4,212.84 × 4,212.84
  4. Step 4: Simplify right side
    1,819.55x = 17,748,052.46
  5. Step 5: Solve for x
    x = 17,748,052.46/1,819.55
  6. Step 6: Final answer
    x = 9,754.11

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.