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Finding the Fourth Proportional to 2,881.24, 4,321.10 and 801.42

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Solution

The fourth proportional to 2,881.24, 4,321.10 and 801.42 is: 1,201.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.24 : 4,321.10 = 801.42 : x
  2. Step 2: Convert to fraction form
    2,881.24/4,321.10 = 801.42/x
  3. Step 3: Cross multiply
    2,881.24x = 4,321.10 × 801.42
  4. Step 4: Simplify right side
    2,881.24x = 3,463,015.96
  5. Step 5: Solve for x
    x = 3,463,015.96/2,881.24
  6. Step 6: Final answer
    x = 1,201.92

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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.