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Finding the Fourth Proportional to 3,672.81, 5,509.38 and 1,174.26

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Solution

The fourth proportional to 3,672.81, 5,509.38 and 1,174.26 is: 1,761.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,672.81 : 5,509.38 = 1,174.26 : x
  2. Step 2: Convert to fraction form
    3,672.81/5,509.38 = 1,174.26/x
  3. Step 3: Cross multiply
    3,672.81x = 5,509.38 × 1,174.26
  4. Step 4: Simplify right side
    3,672.81x = 6,469,444.56
  5. Step 5: Solve for x
    x = 6,469,444.56/3,672.81
  6. Step 6: Final answer
    x = 1,761.44

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1.5x scale

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.