Home / 3,872.81-5,344.34-2,104.38

Finding the Fourth Proportional to 3,872.81, 5,344.34 and 2,104.38

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Solution

The fourth proportional to 3,872.81, 5,344.34 and 2,104.38 is: 2,903.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.81 : 5,344.34 = 2,104.38 : x
  2. Step 2: Convert to fraction form
    3,872.81/5,344.34 = 2,104.38/x
  3. Step 3: Cross multiply
    3,872.81x = 5,344.34 × 2,104.38
  4. Step 4: Simplify right side
    3,872.81x = 11,246,511.69
  5. Step 5: Solve for x
    x = 11,246,511.69/3,872.81
  6. Step 6: Final answer
    x = 2,903.96

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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.