Home / 5,286.36-7,929.07-3,205.75

Finding the Fourth Proportional to 5,286.36, 7,929.07 and 3,205.75

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Solution

The fourth proportional to 5,286.36, 7,929.07 and 3,205.75 is: 4,808.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.36 : 7,929.07 = 3,205.75 : x
  2. Step 2: Convert to fraction form
    5,286.36/7,929.07 = 3,205.75/x
  3. Step 3: Cross multiply
    5,286.36x = 7,929.07 × 3,205.75
  4. Step 4: Simplify right side
    5,286.36x = 25,418,616.15
  5. Step 5: Solve for x
    x = 25,418,616.15/5,286.36
  6. Step 6: Final answer
    x = 4,808.34

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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.