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Finding the Fourth Proportional to 5,611.97, 8,418 and 2,681.39

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Solution

The fourth proportional to 5,611.97, 8,418 and 2,681.39 is: 4,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.97 : 8,418 = 2,681.39 : x
  2. Step 2: Convert to fraction form
    5,611.97/8,418 = 2,681.39/x
  3. Step 3: Cross multiply
    5,611.97x = 8,418 × 2,681.39
  4. Step 4: Simplify right side
    5,611.97x = 22,571,898.93
  5. Step 5: Solve for x
    x = 22,571,898.93/5,611.97
  6. Step 6: Final answer
    x = 4,022.10

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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.