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Finding the Fourth Proportional to 1,843.97, 2,765.47 and 918.85

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Solution

The fourth proportional to 1,843.97, 2,765.47 and 918.85 is: 1,378.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,843.97 : 2,765.47 = 918.85 : x
  2. Step 2: Convert to fraction form
    1,843.97/2,765.47 = 918.85/x
  3. Step 3: Cross multiply
    1,843.97x = 2,765.47 × 918.85
  4. Step 4: Simplify right side
    1,843.97x = 2,541,052.11
  5. Step 5: Solve for x
    x = 2,541,052.11/1,843.97
  6. Step 6: Final answer
    x = 1,378.03

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1.5x scale

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.