Home / 1,286.55-1,931.65-1,227.83

Finding the Fourth Proportional to 1,286.55, 1,931.65 and 1,227.83

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Solution

The fourth proportional to 1,286.55, 1,931.65 and 1,227.83 is: 1,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.55 : 1,931.65 = 1,227.83 : x
  2. Step 2: Convert to fraction form
    1,286.55/1,931.65 = 1,227.83/x
  3. Step 3: Cross multiply
    1,286.55x = 1,931.65 × 1,227.83
  4. Step 4: Simplify right side
    1,286.55x = 2,371,737.82
  5. Step 5: Solve for x
    x = 2,371,737.82/1,286.55
  6. Step 6: Final answer
    x = 1,843.49

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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.