Home / 3,811.62-5,258.84-2,132.80

Finding the Fourth Proportional to 3,811.62, 5,258.84 and 2,132.80

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Solution

The fourth proportional to 3,811.62, 5,258.84 and 2,132.80 is: 2,942.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.62 : 5,258.84 = 2,132.80 : x
  2. Step 2: Convert to fraction form
    3,811.62/5,258.84 = 2,132.80/x
  3. Step 3: Cross multiply
    3,811.62x = 5,258.84 × 2,132.80
  4. Step 4: Simplify right side
    3,811.62x = 11,216,053.95
  5. Step 5: Solve for x
    x = 11,216,053.95/3,811.62
  6. Step 6: Final answer
    x = 2,942.59

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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.