Home / 3,894.89-5,375.04-2,126.66

Finding the Fourth Proportional to 3,894.89, 5,375.04 and 2,126.66

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Solution

The fourth proportional to 3,894.89, 5,375.04 and 2,126.66 is: 2,934.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.89 : 5,375.04 = 2,126.66 : x
  2. Step 2: Convert to fraction form
    3,894.89/5,375.04 = 2,126.66/x
  3. Step 3: Cross multiply
    3,894.89x = 5,375.04 × 2,126.66
  4. Step 4: Simplify right side
    3,894.89x = 11,430,882.57
  5. Step 5: Solve for x
    x = 11,430,882.57/3,894.89
  6. Step 6: Final answer
    x = 2,934.84

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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.