Home / 3,986.17-5,500.87-2,217.75

Finding the Fourth Proportional to 3,986.17, 5,500.87 and 2,217.75

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Solution

The fourth proportional to 3,986.17, 5,500.87 and 2,217.75 is: 3,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.17 : 5,500.87 = 2,217.75 : x
  2. Step 2: Convert to fraction form
    3,986.17/5,500.87 = 2,217.75/x
  3. Step 3: Cross multiply
    3,986.17x = 5,500.87 × 2,217.75
  4. Step 4: Simplify right side
    3,986.17x = 12,199,554.44
  5. Step 5: Solve for x
    x = 12,199,554.44/3,986.17
  6. Step 6: Final answer
    x = 3,060.47

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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.