Home / 3,119.24-4,306.11-1,940.69

Finding the Fourth Proportional to 3,119.24, 4,306.11 and 1,940.69

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Solution

The fourth proportional to 3,119.24, 4,306.11 and 1,940.69 is: 2,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.24 : 4,306.11 = 1,940.69 : x
  2. Step 2: Convert to fraction form
    3,119.24/4,306.11 = 1,940.69/x
  3. Step 3: Cross multiply
    3,119.24x = 4,306.11 × 1,940.69
  4. Step 4: Simplify right side
    3,119.24x = 8,356,824.62
  5. Step 5: Solve for x
    x = 8,356,824.62/3,119.24
  6. Step 6: Final answer
    x = 2,679.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.