Home / 3,115.38-4,668.21-1,958.70

Finding the Fourth Proportional to 3,115.38, 4,668.21 and 1,958.70

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Solution

The fourth proportional to 3,115.38, 4,668.21 and 1,958.70 is: 2,934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.38 : 4,668.21 = 1,958.70 : x
  2. Step 2: Convert to fraction form
    3,115.38/4,668.21 = 1,958.70/x
  3. Step 3: Cross multiply
    3,115.38x = 4,668.21 × 1,958.70
  4. Step 4: Simplify right side
    3,115.38x = 9,143,622.93
  5. Step 5: Solve for x
    x = 9,143,622.93/3,115.38
  6. Step 6: Final answer
    x = 2,934.99

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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.