Home / 2,647.20-3,971.36-1,003.71

Finding the Fourth Proportional to 2,647.20, 3,971.36 and 1,003.71

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Solution

The fourth proportional to 2,647.20, 3,971.36 and 1,003.71 is: 1,505.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.20 : 3,971.36 = 1,003.71 : x
  2. Step 2: Convert to fraction form
    2,647.20/3,971.36 = 1,003.71/x
  3. Step 3: Cross multiply
    2,647.20x = 3,971.36 × 1,003.71
  4. Step 4: Simplify right side
    2,647.20x = 3,986,093.75
  5. Step 5: Solve for x
    x = 3,986,093.75/2,647.20
  6. Step 6: Final answer
    x = 1,505.78

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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.