Home / 3,997.88-5,986.79-2,149.53

Finding the Fourth Proportional to 3,997.88, 5,986.79 and 2,149.53

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Solution

The fourth proportional to 3,997.88, 5,986.79 and 2,149.53 is: 3,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.88 : 5,986.79 = 2,149.53 : x
  2. Step 2: Convert to fraction form
    3,997.88/5,986.79 = 2,149.53/x
  3. Step 3: Cross multiply
    3,997.88x = 5,986.79 × 2,149.53
  4. Step 4: Simplify right side
    3,997.88x = 12,868,784.71
  5. Step 5: Solve for x
    x = 12,868,784.71/3,997.88
  6. Step 6: Final answer
    x = 3,218.90

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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.