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Finding the Fourth Proportional to 2,418.01, 3,627.02 and 686.41

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Solution

The fourth proportional to 2,418.01, 3,627.02 and 686.41 is: 1,029.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.01 : 3,627.02 = 686.41 : x
  2. Step 2: Convert to fraction form
    2,418.01/3,627.02 = 686.41/x
  3. Step 3: Cross multiply
    2,418.01x = 3,627.02 × 686.41
  4. Step 4: Simplify right side
    2,418.01x = 2,489,622.80
  5. Step 5: Solve for x
    x = 2,489,622.80/2,418.01
  6. Step 6: Final answer
    x = 1,029.62

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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.