Home / 3,986.28-5,501.10-2,217.96

Finding the Fourth Proportional to 3,986.28, 5,501.10 and 2,217.96

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Solution

The fourth proportional to 3,986.28, 5,501.10 and 2,217.96 is: 3,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.28 : 5,501.10 = 2,217.96 : x
  2. Step 2: Convert to fraction form
    3,986.28/5,501.10 = 2,217.96/x
  3. Step 3: Cross multiply
    3,986.28x = 5,501.10 × 2,217.96
  4. Step 4: Simplify right side
    3,986.28x = 12,201,219.76
  5. Step 5: Solve for x
    x = 12,201,219.76/3,986.28
  6. Step 6: Final answer
    x = 3,060.80

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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.