Home / 3,986.31-5,500.09-2,217.57

Finding the Fourth Proportional to 3,986.31, 5,500.09 and 2,217.57

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Solution

The fourth proportional to 3,986.31, 5,500.09 and 2,217.57 is: 3,059.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.31 : 5,500.09 = 2,217.57 : x
  2. Step 2: Convert to fraction form
    3,986.31/5,500.09 = 2,217.57/x
  3. Step 3: Cross multiply
    3,986.31x = 5,500.09 × 2,217.57
  4. Step 4: Simplify right side
    3,986.31x = 12,196,823.49
  5. Step 5: Solve for x
    x = 12,196,823.49/3,986.31
  6. Step 6: Final answer
    x = 3,059.68

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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.