Home / 3,940.05-5,435.75-2,260.85

Finding the Fourth Proportional to 3,940.05, 5,435.75 and 2,260.85

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Solution

The fourth proportional to 3,940.05, 5,435.75 and 2,260.85 is: 3,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.05 : 5,435.75 = 2,260.85 : x
  2. Step 2: Convert to fraction form
    3,940.05/5,435.75 = 2,260.85/x
  3. Step 3: Cross multiply
    3,940.05x = 5,435.75 × 2,260.85
  4. Step 4: Simplify right side
    3,940.05x = 12,289,404.08
  5. Step 5: Solve for x
    x = 12,289,404.08/3,940.05
  6. Step 6: Final answer
    x = 3,119.10

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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.