Home / 3,821.25-5,282.15-3,188.09

Finding the Fourth Proportional to 3,821.25, 5,282.15 and 3,188.09

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Solution

The fourth proportional to 3,821.25, 5,282.15 and 3,188.09 is: 4,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.25 : 5,282.15 = 3,188.09 : x
  2. Step 2: Convert to fraction form
    3,821.25/5,282.15 = 3,188.09/x
  3. Step 3: Cross multiply
    3,821.25x = 5,282.15 × 3,188.09
  4. Step 4: Simplify right side
    3,821.25x = 16,839,951.15
  5. Step 5: Solve for x
    x = 16,839,951.15/3,821.25
  6. Step 6: Final answer
    x = 4,406.92

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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.