Home / 3,780.42-5,217.61-2,208.22

Finding the Fourth Proportional to 3,780.42, 5,217.61 and 2,208.22

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Solution

The fourth proportional to 3,780.42, 5,217.61 and 2,208.22 is: 3,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.42 : 5,217.61 = 2,208.22 : x
  2. Step 2: Convert to fraction form
    3,780.42/5,217.61 = 2,208.22/x
  3. Step 3: Cross multiply
    3,780.42x = 5,217.61 × 2,208.22
  4. Step 4: Simplify right side
    3,780.42x = 11,521,630.75
  5. Step 5: Solve for x
    x = 11,521,630.75/3,780.42
  6. Step 6: Final answer
    x = 3,047.71

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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.