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Finding the Fourth Proportional to 3,673.72, 5,509.97 and 1,208.57

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Solution

The fourth proportional to 3,673.72, 5,509.97 and 1,208.57 is: 1,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,673.72 : 5,509.97 = 1,208.57 : x
  2. Step 2: Convert to fraction form
    3,673.72/5,509.97 = 1,208.57/x
  3. Step 3: Cross multiply
    3,673.72x = 5,509.97 × 1,208.57
  4. Step 4: Simplify right side
    3,673.72x = 6,659,150.85
  5. Step 5: Solve for x
    x = 6,659,150.85/3,673.72
  6. Step 6: Final answer
    x = 1,812.65

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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.