Home / 2,581.88-3,873.62-1,121.24

Finding the Fourth Proportional to 2,581.88, 3,873.62 and 1,121.24

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Solution

The fourth proportional to 2,581.88, 3,873.62 and 1,121.24 is: 1,682.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.88 : 3,873.62 = 1,121.24 : x
  2. Step 2: Convert to fraction form
    2,581.88/3,873.62 = 1,121.24/x
  3. Step 3: Cross multiply
    2,581.88x = 3,873.62 × 1,121.24
  4. Step 4: Simplify right side
    2,581.88x = 4,343,270.18
  5. Step 5: Solve for x
    x = 4,343,270.18/2,581.88
  6. Step 6: Final answer
    x = 1,682.22

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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.