Home / 3,811.31-5,259.80-2,132.61

Finding the Fourth Proportional to 3,811.31, 5,259.80 and 2,132.61

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Solution

The fourth proportional to 3,811.31, 5,259.80 and 2,132.61 is: 2,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.31 : 5,259.80 = 2,132.61 : x
  2. Step 2: Convert to fraction form
    3,811.31/5,259.80 = 2,132.61/x
  3. Step 3: Cross multiply
    3,811.31x = 5,259.80 × 2,132.61
  4. Step 4: Simplify right side
    3,811.31x = 11,217,102.08
  5. Step 5: Solve for x
    x = 11,217,102.08/3,811.31
  6. Step 6: Final answer
    x = 2,943.11

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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.