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Finding the Fourth Proportional to 3,805.80, 5,698.43 and 2,486.28

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Solution

The fourth proportional to 3,805.80, 5,698.43 and 2,486.28 is: 3,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.80 : 5,698.43 = 2,486.28 : x
  2. Step 2: Convert to fraction form
    3,805.80/5,698.43 = 2,486.28/x
  3. Step 3: Cross multiply
    3,805.80x = 5,698.43 × 2,486.28
  4. Step 4: Simplify right side
    3,805.80x = 14,167,892.54
  5. Step 5: Solve for x
    x = 14,167,892.54/3,805.80
  6. Step 6: Final answer
    x = 3,722.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.