Home / 3,977.88-5,968.50-2,131.08

Finding the Fourth Proportional to 3,977.88, 5,968.50 and 2,131.08

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Solution

The fourth proportional to 3,977.88, 5,968.50 and 2,131.08 is: 3,197.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.88 : 5,968.50 = 2,131.08 : x
  2. Step 2: Convert to fraction form
    3,977.88/5,968.50 = 2,131.08/x
  3. Step 3: Cross multiply
    3,977.88x = 5,968.50 × 2,131.08
  4. Step 4: Simplify right side
    3,977.88x = 12,719,350.98
  5. Step 5: Solve for x
    x = 12,719,350.98/3,977.88
  6. Step 6: Final answer
    x = 3,197.52

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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.