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Finding the Fourth Proportional to 1,738.75, 2,608.77 and 814.61

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Solution

The fourth proportional to 1,738.75, 2,608.77 and 814.61 is: 1,222.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.75 : 2,608.77 = 814.61 : x
  2. Step 2: Convert to fraction form
    1,738.75/2,608.77 = 814.61/x
  3. Step 3: Cross multiply
    1,738.75x = 2,608.77 × 814.61
  4. Step 4: Simplify right side
    1,738.75x = 2,125,118.16
  5. Step 5: Solve for x
    x = 2,125,118.16/1,738.75
  6. Step 6: Final answer
    x = 1,222.21

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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.