Home / 3,986.09-5,500.91-2,217.81

Finding the Fourth Proportional to 3,986.09, 5,500.91 and 2,217.81

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Solution

The fourth proportional to 3,986.09, 5,500.91 and 2,217.81 is: 3,060.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.09 : 5,500.91 = 2,217.81 : x
  2. Step 2: Convert to fraction form
    3,986.09/5,500.91 = 2,217.81/x
  3. Step 3: Cross multiply
    3,986.09x = 5,500.91 × 2,217.81
  4. Step 4: Simplify right side
    3,986.09x = 12,199,999.38
  5. Step 5: Solve for x
    x = 12,199,999.38/3,986.09
  6. Step 6: Final answer
    x = 3,060.64

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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.