Home / 2,581.08-3,874.10-1,120.68

Finding the Fourth Proportional to 2,581.08, 3,874.10 and 1,120.68

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Solution

The fourth proportional to 2,581.08, 3,874.10 and 1,120.68 is: 1,682.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.08 : 3,874.10 = 1,120.68 : x
  2. Step 2: Convert to fraction form
    2,581.08/3,874.10 = 1,120.68/x
  3. Step 3: Cross multiply
    2,581.08x = 3,874.10 × 1,120.68
  4. Step 4: Simplify right side
    2,581.08x = 4,341,626.39
  5. Step 5: Solve for x
    x = 4,341,626.39/2,581.08
  6. Step 6: Final answer
    x = 1,682.10

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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.