Home / 3,940.72-5,437.97-2,448.62

Finding the Fourth Proportional to 3,940.72, 5,437.97 and 2,448.62

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Solution

The fourth proportional to 3,940.72, 5,437.97 and 2,448.62 is: 3,378.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.72 : 5,437.97 = 2,448.62 : x
  2. Step 2: Convert to fraction form
    3,940.72/5,437.97 = 2,448.62/x
  3. Step 3: Cross multiply
    3,940.72x = 5,437.97 × 2,448.62
  4. Step 4: Simplify right side
    3,940.72x = 13,315,537.87
  5. Step 5: Solve for x
    x = 13,315,537.87/3,940.72
  6. Step 6: Final answer
    x = 3,378.96

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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.