Home / 3,923.69-5,414.66-2,131.15

Finding the Fourth Proportional to 3,923.69, 5,414.66 and 2,131.15

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Solution

The fourth proportional to 3,923.69, 5,414.66 and 2,131.15 is: 2,940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.69 : 5,414.66 = 2,131.15 : x
  2. Step 2: Convert to fraction form
    3,923.69/5,414.66 = 2,131.15/x
  3. Step 3: Cross multiply
    3,923.69x = 5,414.66 × 2,131.15
  4. Step 4: Simplify right side
    3,923.69x = 11,539,457.99
  5. Step 5: Solve for x
    x = 11,539,457.99/3,923.69
  6. Step 6: Final answer
    x = 2,940.97

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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.