Home / 3,858.82-5,324.86-2,180.38

Finding the Fourth Proportional to 3,858.82, 5,324.86 and 2,180.38

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Solution

The fourth proportional to 3,858.82, 5,324.86 and 2,180.38 is: 3,008.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.82 : 5,324.86 = 2,180.38 : x
  2. Step 2: Convert to fraction form
    3,858.82/5,324.86 = 2,180.38/x
  3. Step 3: Cross multiply
    3,858.82x = 5,324.86 × 2,180.38
  4. Step 4: Simplify right side
    3,858.82x = 11,610,188.90
  5. Step 5: Solve for x
    x = 11,610,188.90/3,858.82
  6. Step 6: Final answer
    x = 3,008.74

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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.