Home / 3,905.91-5,393.79-2,511.09

Finding the Fourth Proportional to 3,905.91, 5,393.79 and 2,511.09

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Solution

The fourth proportional to 3,905.91, 5,393.79 and 2,511.09 is: 3,467.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.91 : 5,393.79 = 2,511.09 : x
  2. Step 2: Convert to fraction form
    3,905.91/5,393.79 = 2,511.09/x
  3. Step 3: Cross multiply
    3,905.91x = 5,393.79 × 2,511.09
  4. Step 4: Simplify right side
    3,905.91x = 13,544,292.13
  5. Step 5: Solve for x
    x = 13,544,292.13/3,905.91
  6. Step 6: Final answer
    x = 3,467.64

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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.