Home / 3,921.96-5,881.86-2,817.12

Finding the Fourth Proportional to 3,921.96, 5,881.86 and 2,817.12

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Solution

The fourth proportional to 3,921.96, 5,881.86 and 2,817.12 is: 4,224.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.96 : 5,881.86 = 2,817.12 : x
  2. Step 2: Convert to fraction form
    3,921.96/5,881.86 = 2,817.12/x
  3. Step 3: Cross multiply
    3,921.96x = 5,881.86 × 2,817.12
  4. Step 4: Simplify right side
    3,921.96x = 16,569,905.44
  5. Step 5: Solve for x
    x = 16,569,905.44/3,921.96
  6. Step 6: Final answer
    x = 4,224.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.