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Finding the Fourth Proportional to 3,672.08, 5,503.64 and 1,721.68

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Solution

The fourth proportional to 3,672.08, 5,503.64 and 1,721.68 is: 2,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,672.08 : 5,503.64 = 1,721.68 : x
  2. Step 2: Convert to fraction form
    3,672.08/5,503.64 = 1,721.68/x
  3. Step 3: Cross multiply
    3,672.08x = 5,503.64 × 1,721.68
  4. Step 4: Simplify right side
    3,672.08x = 9,475,506.92
  5. Step 5: Solve for x
    x = 9,475,506.92/3,672.08
  6. Step 6: Final answer
    x = 2,580.42

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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.