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Finding the Fourth Proportional to 1,739.57, 2,608.87 and 814.64

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Solution

The fourth proportional to 1,739.57, 2,608.87 and 814.64 is: 1,221.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,739.57 : 2,608.87 = 814.64 : x
  2. Step 2: Convert to fraction form
    1,739.57/2,608.87 = 814.64/x
  3. Step 3: Cross multiply
    1,739.57x = 2,608.87 × 814.64
  4. Step 4: Simplify right side
    1,739.57x = 2,125,281.30
  5. Step 5: Solve for x
    x = 2,125,281.30/1,739.57
  6. Step 6: Final answer
    x = 1,221.73

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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.