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Finding the Fourth Proportional to 1,843.49, 2,765.14 and 918.75

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Solution

The fourth proportional to 1,843.49, 2,765.14 and 918.75 is: 1,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,843.49 : 2,765.14 = 918.75 : x
  2. Step 2: Convert to fraction form
    1,843.49/2,765.14 = 918.75/x
  3. Step 3: Cross multiply
    1,843.49x = 2,765.14 × 918.75
  4. Step 4: Simplify right side
    1,843.49x = 2,540,472.38
  5. Step 5: Solve for x
    x = 2,540,472.38/1,843.49
  6. Step 6: Final answer
    x = 1,378.08

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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.