Home / 3,939.96-5,439.90-2,448.48

Finding the Fourth Proportional to 3,939.96, 5,439.90 and 2,448.48

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Solution

The fourth proportional to 3,939.96, 5,439.90 and 2,448.48 is: 3,380.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.96 : 5,439.90 = 2,448.48 : x
  2. Step 2: Convert to fraction form
    3,939.96/5,439.90 = 2,448.48/x
  3. Step 3: Cross multiply
    3,939.96x = 5,439.90 × 2,448.48
  4. Step 4: Simplify right side
    3,939.96x = 13,319,486.35
  5. Step 5: Solve for x
    x = 13,319,486.35/3,939.96
  6. Step 6: Final answer
    x = 3,380.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.