Home / 3,986.42-5,500.80-2,217.60

Finding the Fourth Proportional to 3,986.42, 5,500.80 and 2,217.60

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Solution

The fourth proportional to 3,986.42, 5,500.80 and 2,217.60 is: 3,060.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.42 : 5,500.80 = 2,217.60 : x
  2. Step 2: Convert to fraction form
    3,986.42/5,500.80 = 2,217.60/x
  3. Step 3: Cross multiply
    3,986.42x = 5,500.80 × 2,217.60
  4. Step 4: Simplify right side
    3,986.42x = 12,198,574.08
  5. Step 5: Solve for x
    x = 12,198,574.08/3,986.42
  6. Step 6: Final answer
    x = 3,060.04

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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.