Home / 2,811.56-4,211.70-2,581.91

Finding the Fourth Proportional to 2,811.56, 4,211.70 and 2,581.91

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Solution

The fourth proportional to 2,811.56, 4,211.70 and 2,581.91 is: 3,867.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.56 : 4,211.70 = 2,581.91 : x
  2. Step 2: Convert to fraction form
    2,811.56/4,211.70 = 2,581.91/x
  3. Step 3: Cross multiply
    2,811.56x = 4,211.70 × 2,581.91
  4. Step 4: Simplify right side
    2,811.56x = 10,874,230.35
  5. Step 5: Solve for x
    x = 10,874,230.35/2,811.56
  6. Step 6: Final answer
    x = 3,867.69

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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.