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Finding the Fourth Proportional to 1,751.68, 2,626.84 and 518.73

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Solution

The fourth proportional to 1,751.68, 2,626.84 and 518.73 is: 777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.68 : 2,626.84 = 518.73 : x
  2. Step 2: Convert to fraction form
    1,751.68/2,626.84 = 518.73/x
  3. Step 3: Cross multiply
    1,751.68x = 2,626.84 × 518.73
  4. Step 4: Simplify right side
    1,751.68x = 1,362,620.71
  5. Step 5: Solve for x
    x = 1,362,620.71/1,751.68
  6. Step 6: Final answer
    x = 777.89

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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.