Home / 6,665.28-10,000.80-3,739.20

Finding the Fourth Proportional to 6,665.28, 10,000.80 and 3,739.20

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Solution

The fourth proportional to 6,665.28, 10,000.80 and 3,739.20 is: 5,610.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.28 : 10,000.80 = 3,739.20 : x
  2. Step 2: Convert to fraction form
    6,665.28/10,000.80 = 3,739.20/x
  3. Step 3: Cross multiply
    6,665.28x = 10,000.80 × 3,739.20
  4. Step 4: Simplify right side
    6,665.28x = 37,394,991.36
  5. Step 5: Solve for x
    x = 37,394,991.36/6,665.28
  6. Step 6: Final answer
    x = 5,610.42

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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.