Home / 2,581.38-3,873.66-1,021.12

Finding the Fourth Proportional to 2,581.38, 3,873.66 and 1,021.12

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Solution

The fourth proportional to 2,581.38, 3,873.66 and 1,021.12 is: 1,532.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.38 : 3,873.66 = 1,021.12 : x
  2. Step 2: Convert to fraction form
    2,581.38/3,873.66 = 1,021.12/x
  3. Step 3: Cross multiply
    2,581.38x = 3,873.66 × 1,021.12
  4. Step 4: Simplify right side
    2,581.38x = 3,955,462.02
  5. Step 5: Solve for x
    x = 3,955,462.02/2,581.38
  6. Step 6: Final answer
    x = 1,532.31

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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.