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Finding the Fourth Proportional to 3,739, 5,607.78 and 1,273.80

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Solution

The fourth proportional to 3,739, 5,607.78 and 1,273.80 is: 1,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739 : 5,607.78 = 1,273.80 : x
  2. Step 2: Convert to fraction form
    3,739/5,607.78 = 1,273.80/x
  3. Step 3: Cross multiply
    3,739x = 5,607.78 × 1,273.80
  4. Step 4: Simplify right side
    3,739x = 7,143,190.16
  5. Step 5: Solve for x
    x = 7,143,190.16/3,739
  6. Step 6: Final answer
    x = 1,910.45

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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.