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Finding the Fourth Proportional to 1,738.56, 2,608.44 and 872.64

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Solution

The fourth proportional to 1,738.56, 2,608.44 and 872.64 is: 1,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.56 : 2,608.44 = 872.64 : x
  2. Step 2: Convert to fraction form
    1,738.56/2,608.44 = 872.64/x
  3. Step 3: Cross multiply
    1,738.56x = 2,608.44 × 872.64
  4. Step 4: Simplify right side
    1,738.56x = 2,276,229.08
  5. Step 5: Solve for x
    x = 2,276,229.08/1,738.56
  6. Step 6: Final answer
    x = 1,309.26

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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.