Home / 3,874.86-5,345.58-2,581.68

Finding the Fourth Proportional to 3,874.86, 5,345.58 and 2,581.68

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Solution

The fourth proportional to 3,874.86, 5,345.58 and 2,581.68 is: 3,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.86 : 5,345.58 = 2,581.68 : x
  2. Step 2: Convert to fraction form
    3,874.86/5,345.58 = 2,581.68/x
  3. Step 3: Cross multiply
    3,874.86x = 5,345.58 × 2,581.68
  4. Step 4: Simplify right side
    3,874.86x = 13,800,576.97
  5. Step 5: Solve for x
    x = 13,800,576.97/3,874.86
  6. Step 6: Final answer
    x = 3,561.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.