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Finding the Fourth Proportional to 1,751.12, 2,626.43 and 518.48

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Solution

The fourth proportional to 1,751.12, 2,626.43 and 518.48 is: 777.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.12 : 2,626.43 = 518.48 : x
  2. Step 2: Convert to fraction form
    1,751.12/2,626.43 = 518.48/x
  3. Step 3: Cross multiply
    1,751.12x = 2,626.43 × 518.48
  4. Step 4: Simplify right side
    1,751.12x = 1,361,735.70
  5. Step 5: Solve for x
    x = 1,361,735.70/1,751.12
  6. Step 6: Final answer
    x = 777.64

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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.