Home / 3,940.52-5,437.68-2,261.56

Finding the Fourth Proportional to 3,940.52, 5,437.68 and 2,261.56

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Solution

The fourth proportional to 3,940.52, 5,437.68 and 2,261.56 is: 3,120.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.52 : 5,437.68 = 2,261.56 : x
  2. Step 2: Convert to fraction form
    3,940.52/5,437.68 = 2,261.56/x
  3. Step 3: Cross multiply
    3,940.52x = 5,437.68 × 2,261.56
  4. Step 4: Simplify right side
    3,940.52x = 12,297,639.58
  5. Step 5: Solve for x
    x = 12,297,639.58/3,940.52
  6. Step 6: Final answer
    x = 3,120.82

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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.