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Finding the Fourth Proportional to 3,615, 4,988.82 and 2,217.48

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Solution

The fourth proportional to 3,615, 4,988.82 and 2,217.48 is: 3,060.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615 : 4,988.82 = 2,217.48 : x
  2. Step 2: Convert to fraction form
    3,615/4,988.82 = 2,217.48/x
  3. Step 3: Cross multiply
    3,615x = 4,988.82 × 2,217.48
  4. Step 4: Simplify right side
    3,615x = 11,062,608.57
  5. Step 5: Solve for x
    x = 11,062,608.57/3,615
  6. Step 6: Final answer
    x = 3,060.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.