Home / 3,638.84-5,021.87-2,067.21

Finding the Fourth Proportional to 3,638.84, 5,021.87 and 2,067.21

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Solution

The fourth proportional to 3,638.84, 5,021.87 and 2,067.21 is: 2,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.84 : 5,021.87 = 2,067.21 : x
  2. Step 2: Convert to fraction form
    3,638.84/5,021.87 = 2,067.21/x
  3. Step 3: Cross multiply
    3,638.84x = 5,021.87 × 2,067.21
  4. Step 4: Simplify right side
    3,638.84x = 10,381,249.55
  5. Step 5: Solve for x
    x = 10,381,249.55/3,638.84
  6. Step 6: Final answer
    x = 2,852.90

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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.