Home / 3,850.85-5,315.61-2,998.42

Finding the Fourth Proportional to 3,850.85, 5,315.61 and 2,998.42

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Solution

The fourth proportional to 3,850.85, 5,315.61 and 2,998.42 is: 4,138.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.85 : 5,315.61 = 2,998.42 : x
  2. Step 2: Convert to fraction form
    3,850.85/5,315.61 = 2,998.42/x
  3. Step 3: Cross multiply
    3,850.85x = 5,315.61 × 2,998.42
  4. Step 4: Simplify right side
    3,850.85x = 15,938,429.29
  5. Step 5: Solve for x
    x = 15,938,429.29/3,850.85
  6. Step 6: Final answer
    x = 4,138.94

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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.