Home / 3,940.58-5,438.14-2,447.35

Finding the Fourth Proportional to 3,940.58, 5,438.14 and 2,447.35

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Solution

The fourth proportional to 3,940.58, 5,438.14 and 2,447.35 is: 3,377.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.58 : 5,438.14 = 2,447.35 : x
  2. Step 2: Convert to fraction form
    3,940.58/5,438.14 = 2,447.35/x
  3. Step 3: Cross multiply
    3,940.58x = 5,438.14 × 2,447.35
  4. Step 4: Simplify right side
    3,940.58x = 13,309,012.22
  5. Step 5: Solve for x
    x = 13,309,012.22/3,940.58
  6. Step 6: Final answer
    x = 3,377.42

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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.