Home / 3,939.08-5,909.24-1,306.68

Finding the Fourth Proportional to 3,939.08, 5,909.24 and 1,306.68

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Solution

The fourth proportional to 3,939.08, 5,909.24 and 1,306.68 is: 1,960.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.08 : 5,909.24 = 1,306.68 : x
  2. Step 2: Convert to fraction form
    3,939.08/5,909.24 = 1,306.68/x
  3. Step 3: Cross multiply
    3,939.08x = 5,909.24 × 1,306.68
  4. Step 4: Simplify right side
    3,939.08x = 7,721,485.72
  5. Step 5: Solve for x
    x = 7,721,485.72/3,939.08
  6. Step 6: Final answer
    x = 1,960.23

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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.