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Finding the Fourth Proportional to 3,994.61, 5,991.51 and 1,072.54

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Solution

The fourth proportional to 3,994.61, 5,991.51 and 1,072.54 is: 1,608.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.61 : 5,991.51 = 1,072.54 : x
  2. Step 2: Convert to fraction form
    3,994.61/5,991.51 = 1,072.54/x
  3. Step 3: Cross multiply
    3,994.61x = 5,991.51 × 1,072.54
  4. Step 4: Simplify right side
    3,994.61x = 6,426,104.18
  5. Step 5: Solve for x
    x = 6,426,104.18/3,994.61
  6. Step 6: Final answer
    x = 1,608.69

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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.