Home / 1,286.66-1,928.24-591.80

Finding the Fourth Proportional to 1,286.66, 1,928.24 and 591.80

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Solution

The fourth proportional to 1,286.66, 1,928.24 and 591.80 is: 886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.66 : 1,928.24 = 591.80 : x
  2. Step 2: Convert to fraction form
    1,286.66/1,928.24 = 591.80/x
  3. Step 3: Cross multiply
    1,286.66x = 1,928.24 × 591.80
  4. Step 4: Simplify right side
    1,286.66x = 1,141,125.38
  5. Step 5: Solve for x
    x = 1,141,125.38/1,286.66
  6. Step 6: Final answer
    x = 886.89

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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.