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Finding the Fourth Proportional to 3,717.92, 5,578.32 and 1,636.82

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Solution

The fourth proportional to 3,717.92, 5,578.32 and 1,636.82 is: 2,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.92 : 5,578.32 = 1,636.82 : x
  2. Step 2: Convert to fraction form
    3,717.92/5,578.32 = 1,636.82/x
  3. Step 3: Cross multiply
    3,717.92x = 5,578.32 × 1,636.82
  4. Step 4: Simplify right side
    3,717.92x = 9,130,705.74
  5. Step 5: Solve for x
    x = 9,130,705.74/3,717.92
  6. Step 6: Final answer
    x = 2,455.86

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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.