Home / 3,811.75-5,260.41-2,240.35

Finding the Fourth Proportional to 3,811.75, 5,260.41 and 2,240.35

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Solution

The fourth proportional to 3,811.75, 5,260.41 and 2,240.35 is: 3,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.75 : 5,260.41 = 2,240.35 : x
  2. Step 2: Convert to fraction form
    3,811.75/5,260.41 = 2,240.35/x
  3. Step 3: Cross multiply
    3,811.75x = 5,260.41 × 2,240.35
  4. Step 4: Simplify right side
    3,811.75x = 11,785,159.54
  5. Step 5: Solve for x
    x = 11,785,159.54/3,811.75
  6. Step 6: Final answer
    x = 3,091.80

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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.