Home / 3,821.78-5,732.67-2,179.10

Finding the Fourth Proportional to 3,821.78, 5,732.67 and 2,179.10

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Solution

The fourth proportional to 3,821.78, 5,732.67 and 2,179.10 is: 3,268.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.78 : 5,732.67 = 2,179.10 : x
  2. Step 2: Convert to fraction form
    3,821.78/5,732.67 = 2,179.10/x
  3. Step 3: Cross multiply
    3,821.78x = 5,732.67 × 2,179.10
  4. Step 4: Simplify right side
    3,821.78x = 12,492,083.70
  5. Step 5: Solve for x
    x = 12,492,083.70/3,821.78
  6. Step 6: Final answer
    x = 3,268.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.