Home / 3,811.76-5,260.20-2,240.76

Finding the Fourth Proportional to 3,811.76, 5,260.20 and 2,240.76

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Solution

The fourth proportional to 3,811.76, 5,260.20 and 2,240.76 is: 3,092.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.76 : 5,260.20 = 2,240.76 : x
  2. Step 2: Convert to fraction form
    3,811.76/5,260.20 = 2,240.76/x
  3. Step 3: Cross multiply
    3,811.76x = 5,260.20 × 2,240.76
  4. Step 4: Simplify right side
    3,811.76x = 11,786,845.75
  5. Step 5: Solve for x
    x = 11,786,845.75/3,811.76
  6. Step 6: Final answer
    x = 3,092.23

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1.5x scale

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.