Home / 3,805.83-5,252.20-2,127.78

Finding the Fourth Proportional to 3,805.83, 5,252.20 and 2,127.78

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Solution

The fourth proportional to 3,805.83, 5,252.20 and 2,127.78 is: 2,936.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.83 : 5,252.20 = 2,127.78 : x
  2. Step 2: Convert to fraction form
    3,805.83/5,252.20 = 2,127.78/x
  3. Step 3: Cross multiply
    3,805.83x = 5,252.20 × 2,127.78
  4. Step 4: Simplify right side
    3,805.83x = 11,175,526.12
  5. Step 5: Solve for x
    x = 11,175,526.12/3,805.83
  6. Step 6: Final answer
    x = 2,936.42

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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.