Home / 3,986.13-5,500.74-2,217.72

Finding the Fourth Proportional to 3,986.13, 5,500.74 and 2,217.72

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Solution

The fourth proportional to 3,986.13, 5,500.74 and 2,217.72 is: 3,060.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.13 : 5,500.74 = 2,217.72 : x
  2. Step 2: Convert to fraction form
    3,986.13/5,500.74 = 2,217.72/x
  3. Step 3: Cross multiply
    3,986.13x = 5,500.74 × 2,217.72
  4. Step 4: Simplify right side
    3,986.13x = 12,199,101.11
  5. Step 5: Solve for x
    x = 12,199,101.11/3,986.13
  6. Step 6: Final answer
    x = 3,060.39

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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.