Home / 3,921.14-5,405.94-3,359.21

Finding the Fourth Proportional to 3,921.14, 5,405.94 and 3,359.21

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Solution

The fourth proportional to 3,921.14, 5,405.94 and 3,359.21 is: 4,631.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.14 : 5,405.94 = 3,359.21 : x
  2. Step 2: Convert to fraction form
    3,921.14/5,405.94 = 3,359.21/x
  3. Step 3: Cross multiply
    3,921.14x = 5,405.94 × 3,359.21
  4. Step 4: Simplify right side
    3,921.14x = 18,159,660.68
  5. Step 5: Solve for x
    x = 18,159,660.68/3,921.14
  6. Step 6: Final answer
    x = 4,631.22

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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.