Home / 3,986.28-5,500.02-2,217.45

Finding the Fourth Proportional to 3,986.28, 5,500.02 and 2,217.45

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Solution

The fourth proportional to 3,986.28, 5,500.02 and 2,217.45 is: 3,059.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.28 : 5,500.02 = 2,217.45 : x
  2. Step 2: Convert to fraction form
    3,986.28/5,500.02 = 2,217.45/x
  3. Step 3: Cross multiply
    3,986.28x = 5,500.02 × 2,217.45
  4. Step 4: Simplify right side
    3,986.28x = 12,196,019.35
  5. Step 5: Solve for x
    x = 12,196,019.35/3,986.28
  6. Step 6: Final answer
    x = 3,059.50

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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.