Home / 3,657.72-5,473.82-2,991.90

Finding the Fourth Proportional to 3,657.72, 5,473.82 and 2,991.90

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Solution

The fourth proportional to 3,657.72, 5,473.82 and 2,991.90 is: 4,477.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.72 : 5,473.82 = 2,991.90 : x
  2. Step 2: Convert to fraction form
    3,657.72/5,473.82 = 2,991.90/x
  3. Step 3: Cross multiply
    3,657.72x = 5,473.82 × 2,991.90
  4. Step 4: Simplify right side
    3,657.72x = 16,377,129.54
  5. Step 5: Solve for x
    x = 16,377,129.54/3,657.72
  6. Step 6: Final answer
    x = 4,477.41

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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.