Home / 3,939.43-5,909.42-1,306.83

Finding the Fourth Proportional to 3,939.43, 5,909.42 and 1,306.83

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Solution

The fourth proportional to 3,939.43, 5,909.42 and 1,306.83 is: 1,960.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.43 : 5,909.42 = 1,306.83 : x
  2. Step 2: Convert to fraction form
    3,939.43/5,909.42 = 1,306.83/x
  3. Step 3: Cross multiply
    3,939.43x = 5,909.42 × 1,306.83
  4. Step 4: Simplify right side
    3,939.43x = 7,722,607.34
  5. Step 5: Solve for x
    x = 7,722,607.34/3,939.43
  6. Step 6: Final answer
    x = 1,960.34

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1.5x scale

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.