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Finding the Fourth Proportional to 3,704.70, 5,556.81 and 1,239.31

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Solution

The fourth proportional to 3,704.70, 5,556.81 and 1,239.31 is: 1,858.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,704.70 : 5,556.81 = 1,239.31 : x
  2. Step 2: Convert to fraction form
    3,704.70/5,556.81 = 1,239.31/x
  3. Step 3: Cross multiply
    3,704.70x = 5,556.81 × 1,239.31
  4. Step 4: Simplify right side
    3,704.70x = 6,886,610.20
  5. Step 5: Solve for x
    x = 6,886,610.20/3,704.70
  6. Step 6: Final answer
    x = 1,858.88

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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.