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Finding the Fourth Proportional to 1,843.53, 2,765.78 and 919.52

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Solution

The fourth proportional to 1,843.53, 2,765.78 and 919.52 is: 1,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,843.53 : 2,765.78 = 919.52 : x
  2. Step 2: Convert to fraction form
    1,843.53/2,765.78 = 919.52/x
  3. Step 3: Cross multiply
    1,843.53x = 2,765.78 × 919.52
  4. Step 4: Simplify right side
    1,843.53x = 2,543,171.60
  5. Step 5: Solve for x
    x = 2,543,171.60/1,843.53
  6. Step 6: Final answer
    x = 1,379.51

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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.