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Finding the Fourth Proportional to 1,823.85, 2,736.18 and 728.73

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Solution

The fourth proportional to 1,823.85, 2,736.18 and 728.73 is: 1,093.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,823.85 : 2,736.18 = 728.73 : x
  2. Step 2: Convert to fraction form
    1,823.85/2,736.18 = 728.73/x
  3. Step 3: Cross multiply
    1,823.85x = 2,736.18 × 728.73
  4. Step 4: Simplify right side
    1,823.85x = 1,993,936.45
  5. Step 5: Solve for x
    x = 1,993,936.45/1,823.85
  6. Step 6: Final answer
    x = 1,093.26

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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.