Home / 3,780.94-5,217.40-2,102.22

Finding the Fourth Proportional to 3,780.94, 5,217.40 and 2,102.22

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Solution

The fourth proportional to 3,780.94, 5,217.40 and 2,102.22 is: 2,900.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.94 : 5,217.40 = 2,102.22 : x
  2. Step 2: Convert to fraction form
    3,780.94/5,217.40 = 2,102.22/x
  3. Step 3: Cross multiply
    3,780.94x = 5,217.40 × 2,102.22
  4. Step 4: Simplify right side
    3,780.94x = 10,968,086.03
  5. Step 5: Solve for x
    x = 10,968,086.03/3,780.94
  6. Step 6: Final answer
    x = 2,900.89

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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.