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Finding the Fourth Proportional to 3,672.61, 5,509.15 and 1,481.36

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Solution

The fourth proportional to 3,672.61, 5,509.15 and 1,481.36 is: 2,222.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,672.61 : 5,509.15 = 1,481.36 : x
  2. Step 2: Convert to fraction form
    3,672.61/5,509.15 = 1,481.36/x
  3. Step 3: Cross multiply
    3,672.61x = 5,509.15 × 1,481.36
  4. Step 4: Simplify right side
    3,672.61x = 8,161,003.19
  5. Step 5: Solve for x
    x = 8,161,003.19/3,672.61
  6. Step 6: Final answer
    x = 2,222.13

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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.