Home / 3,811.47-5,259.83-2,132.88

Finding the Fourth Proportional to 3,811.47, 5,259.83 and 2,132.88

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Solution

The fourth proportional to 3,811.47, 5,259.83 and 2,132.88 is: 2,943.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.47 : 5,259.83 = 2,132.88 : x
  2. Step 2: Convert to fraction form
    3,811.47/5,259.83 = 2,132.88/x
  3. Step 3: Cross multiply
    3,811.47x = 5,259.83 × 2,132.88
  4. Step 4: Simplify right side
    3,811.47x = 11,218,562.62
  5. Step 5: Solve for x
    x = 11,218,562.62/3,811.47
  6. Step 6: Final answer
    x = 2,943.37

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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.