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Finding the Fourth Proportional to 1,828.77, 2,743.17 and 512.52

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Solution

The fourth proportional to 1,828.77, 2,743.17 and 512.52 is: 768.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,828.77 : 2,743.17 = 512.52 : x
  2. Step 2: Convert to fraction form
    1,828.77/2,743.17 = 512.52/x
  3. Step 3: Cross multiply
    1,828.77x = 2,743.17 × 512.52
  4. Step 4: Simplify right side
    1,828.77x = 1,405,929.49
  5. Step 5: Solve for x
    x = 1,405,929.49/1,828.77
  6. Step 6: Final answer
    x = 768.78

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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.