Home / 3,939.58-5,434.22-2,345.17

Finding the Fourth Proportional to 3,939.58, 5,434.22 and 2,345.17

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Solution

The fourth proportional to 3,939.58, 5,434.22 and 2,345.17 is: 3,234.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.58 : 5,434.22 = 2,345.17 : x
  2. Step 2: Convert to fraction form
    3,939.58/5,434.22 = 2,345.17/x
  3. Step 3: Cross multiply
    3,939.58x = 5,434.22 × 2,345.17
  4. Step 4: Simplify right side
    3,939.58x = 12,744,169.72
  5. Step 5: Solve for x
    x = 12,744,169.72/3,939.58
  6. Step 6: Final answer
    x = 3,234.91

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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.