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Finding the Fourth Proportional to 3,999.78, 5,994.66 and 2,539.35

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Solution

The fourth proportional to 3,999.78, 5,994.66 and 2,539.35 is: 3,805.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.78 : 5,994.66 = 2,539.35 : x
  2. Step 2: Convert to fraction form
    3,999.78/5,994.66 = 2,539.35/x
  3. Step 3: Cross multiply
    3,999.78x = 5,994.66 × 2,539.35
  4. Step 4: Simplify right side
    3,999.78x = 15,222,539.87
  5. Step 5: Solve for x
    x = 15,222,539.87/3,999.78
  6. Step 6: Final answer
    x = 3,805.84

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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.