Home / 3,387.90-5,079.78-2,216.48

Finding the Fourth Proportional to 3,387.90, 5,079.78 and 2,216.48

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Solution

The fourth proportional to 3,387.90, 5,079.78 and 2,216.48 is: 3,323.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.90 : 5,079.78 = 2,216.48 : x
  2. Step 2: Convert to fraction form
    3,387.90/5,079.78 = 2,216.48/x
  3. Step 3: Cross multiply
    3,387.90x = 5,079.78 × 2,216.48
  4. Step 4: Simplify right side
    3,387.90x = 11,259,230.77
  5. Step 5: Solve for x
    x = 11,259,230.77/3,387.90
  6. Step 6: Final answer
    x = 3,323.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.