Home / 1,836.06-2,753.78-519.91

Finding the Fourth Proportional to 1,836.06, 2,753.78 and 519.91

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Solution

The fourth proportional to 1,836.06, 2,753.78 and 519.91 is: 779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836.06 : 2,753.78 = 519.91 : x
  2. Step 2: Convert to fraction form
    1,836.06/2,753.78 = 519.91/x
  3. Step 3: Cross multiply
    1,836.06x = 2,753.78 × 519.91
  4. Step 4: Simplify right side
    1,836.06x = 1,431,717.76
  5. Step 5: Solve for x
    x = 1,431,717.76/1,836.06
  6. Step 6: Final answer
    x = 779.78

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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.