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Finding the Fourth Proportional to 3,606.45, 4,976.91 and 1,991.37

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Solution

The fourth proportional to 3,606.45, 4,976.91 and 1,991.37 is: 2,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,606.45 : 4,976.91 = 1,991.37 : x
  2. Step 2: Convert to fraction form
    3,606.45/4,976.91 = 1,991.37/x
  3. Step 3: Cross multiply
    3,606.45x = 4,976.91 × 1,991.37
  4. Step 4: Simplify right side
    3,606.45x = 9,910,850.60
  5. Step 5: Solve for x
    x = 9,910,850.60/3,606.45
  6. Step 6: Final answer
    x = 2,748.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.