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Finding the Fourth Proportional to 2,575.86, 3,863.45 and 727.13

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Solution

The fourth proportional to 2,575.86, 3,863.45 and 727.13 is: 1,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,575.86 : 3,863.45 = 727.13 : x
  2. Step 2: Convert to fraction form
    2,575.86/3,863.45 = 727.13/x
  3. Step 3: Cross multiply
    2,575.86x = 3,863.45 × 727.13
  4. Step 4: Simplify right side
    2,575.86x = 2,809,207.45
  5. Step 5: Solve for x
    x = 2,809,207.45/2,575.86
  6. Step 6: Final answer
    x = 1,090.59

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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.