Home / 3,286.74-4,926.93-1,311.80

Finding the Fourth Proportional to 3,286.74, 4,926.93 and 1,311.80

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Solution

The fourth proportional to 3,286.74, 4,926.93 and 1,311.80 is: 1,966.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.74 : 4,926.93 = 1,311.80 : x
  2. Step 2: Convert to fraction form
    3,286.74/4,926.93 = 1,311.80/x
  3. Step 3: Cross multiply
    3,286.74x = 4,926.93 × 1,311.80
  4. Step 4: Simplify right side
    3,286.74x = 6,463,144.93
  5. Step 5: Solve for x
    x = 6,463,144.93/3,286.74
  6. Step 6: Final answer
    x = 1,966.43

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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.