Home / 3,830.61-5,286.21-2,152.04

Finding the Fourth Proportional to 3,830.61, 5,286.21 and 2,152.04

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Solution

The fourth proportional to 3,830.61, 5,286.21 and 2,152.04 is: 2,969.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.61 : 5,286.21 = 2,152.04 : x
  2. Step 2: Convert to fraction form
    3,830.61/5,286.21 = 2,152.04/x
  3. Step 3: Cross multiply
    3,830.61x = 5,286.21 × 2,152.04
  4. Step 4: Simplify right side
    3,830.61x = 11,376,108.94
  5. Step 5: Solve for x
    x = 11,376,108.94/3,830.61
  6. Step 6: Final answer
    x = 2,969.79

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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.