Home / 1,286.58-1,931.70-1,227.86

Finding the Fourth Proportional to 1,286.58, 1,931.70 and 1,227.86

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Solution

The fourth proportional to 1,286.58, 1,931.70 and 1,227.86 is: 1,843.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.58 : 1,931.70 = 1,227.86 : x
  2. Step 2: Convert to fraction form
    1,286.58/1,931.70 = 1,227.86/x
  3. Step 3: Cross multiply
    1,286.58x = 1,931.70 × 1,227.86
  4. Step 4: Simplify right side
    1,286.58x = 2,371,857.16
  5. Step 5: Solve for x
    x = 2,371,857.16/1,286.58
  6. Step 6: Final answer
    x = 1,843.54

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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.