Home / 3,890.75-5,367.78-2,494.31

Finding the Fourth Proportional to 3,890.75, 5,367.78 and 2,494.31

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Solution

The fourth proportional to 3,890.75, 5,367.78 and 2,494.31 is: 3,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.75 : 5,367.78 = 2,494.31 : x
  2. Step 2: Convert to fraction form
    3,890.75/5,367.78 = 2,494.31/x
  3. Step 3: Cross multiply
    3,890.75x = 5,367.78 × 2,494.31
  4. Step 4: Simplify right side
    3,890.75x = 13,388,880.49
  5. Step 5: Solve for x
    x = 13,388,880.49/3,890.75
  6. Step 6: Final answer
    x = 3,441.21

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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.