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Finding the Fourth Proportional to 2,136.69, 3,205.17 and 675.95

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Solution

The fourth proportional to 2,136.69, 3,205.17 and 675.95 is: 1,013.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.69 : 3,205.17 = 675.95 : x
  2. Step 2: Convert to fraction form
    2,136.69/3,205.17 = 675.95/x
  3. Step 3: Cross multiply
    2,136.69x = 3,205.17 × 675.95
  4. Step 4: Simplify right side
    2,136.69x = 2,166,518.64
  5. Step 5: Solve for x
    x = 2,166,518.64/2,136.69
  6. Step 6: Final answer
    x = 1,013.96

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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.