Home / 3,863.96-5,331.94-2,185.28

Finding the Fourth Proportional to 3,863.96, 5,331.94 and 2,185.28

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Solution

The fourth proportional to 3,863.96, 5,331.94 and 2,185.28 is: 3,015.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.96 : 5,331.94 = 2,185.28 : x
  2. Step 2: Convert to fraction form
    3,863.96/5,331.94 = 2,185.28/x
  3. Step 3: Cross multiply
    3,863.96x = 5,331.94 × 2,185.28
  4. Step 4: Simplify right side
    3,863.96x = 11,651,749.72
  5. Step 5: Solve for x
    x = 11,651,749.72/3,863.96
  6. Step 6: Final answer
    x = 3,015.50

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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.