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Finding the Fourth Proportional to 1,751.73, 2,628.09 and 519.14

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Solution

The fourth proportional to 1,751.73, 2,628.09 and 519.14 is: 778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.73 : 2,628.09 = 519.14 : x
  2. Step 2: Convert to fraction form
    1,751.73/2,628.09 = 519.14/x
  3. Step 3: Cross multiply
    1,751.73x = 2,628.09 × 519.14
  4. Step 4: Simplify right side
    1,751.73x = 1,364,333.50
  5. Step 5: Solve for x
    x = 1,364,333.50/1,751.73
  6. Step 6: Final answer
    x = 778.85

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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.