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Finding the Fourth Proportional to 3,894.66, 5,838.78 and 2,664.45

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Solution

The fourth proportional to 3,894.66, 5,838.78 and 2,664.45 is: 3,994.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.66 : 5,838.78 = 2,664.45 : x
  2. Step 2: Convert to fraction form
    3,894.66/5,838.78 = 2,664.45/x
  3. Step 3: Cross multiply
    3,894.66x = 5,838.78 × 2,664.45
  4. Step 4: Simplify right side
    3,894.66x = 15,557,137.37
  5. Step 5: Solve for x
    x = 15,557,137.37/3,894.66
  6. Step 6: Final answer
    x = 3,994.48

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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.