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Finding the Third Proportional to 1,929.66 and 4,200.61

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Solution

The third proportional to 1,929.66 and 4,200.61 is: 9,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.66 : 4,200.61 = 4,200.61 : x
  2. Step 2: Convert to fraction form
    1,929.66/4,200.61 = 4,200.61/x
  3. Step 3: Cross multiply
    1,929.66x = 4,200.61 × 4,200.61
  4. Step 4: Simplify right side
    1,929.66x = 17,645,119.12
  5. Step 5: Solve for x
    x = 17,645,119.12/1,929.66
  6. Step 6: Final answer
    x = 9,144.18

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.