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Finding the Fourth Proportional to 1,838.58, 2,759.49 and 743.73

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Solution

The fourth proportional to 1,838.58, 2,759.49 and 743.73 is: 1,116.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.58 : 2,759.49 = 743.73 : x
  2. Step 2: Convert to fraction form
    1,838.58/2,759.49 = 743.73/x
  3. Step 3: Cross multiply
    1,838.58x = 2,759.49 × 743.73
  4. Step 4: Simplify right side
    1,838.58x = 2,052,315.50
  5. Step 5: Solve for x
    x = 2,052,315.50/1,838.58
  6. Step 6: Final answer
    x = 1,116.25

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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.