Home / 3,805.37-5,251.41-2,126.78

Finding the Fourth Proportional to 3,805.37, 5,251.41 and 2,126.78

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Solution

The fourth proportional to 3,805.37, 5,251.41 and 2,126.78 is: 2,934.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.37 : 5,251.41 = 2,126.78 : x
  2. Step 2: Convert to fraction form
    3,805.37/5,251.41 = 2,126.78/x
  3. Step 3: Cross multiply
    3,805.37x = 5,251.41 × 2,126.78
  4. Step 4: Simplify right side
    3,805.37x = 11,168,593.76
  5. Step 5: Solve for x
    x = 11,168,593.76/3,805.37
  6. Step 6: Final answer
    x = 2,934.96

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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.