Home / 4,786.79-7,172.85-3,221

Finding the Fourth Proportional to 4,786.79, 7,172.85 and 3,221

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Solution

The fourth proportional to 4,786.79, 7,172.85 and 3,221 is: 4,826.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.79 : 7,172.85 = 3,221 : x
  2. Step 2: Convert to fraction form
    4,786.79/7,172.85 = 3,221/x
  3. Step 3: Cross multiply
    4,786.79x = 7,172.85 × 3,221
  4. Step 4: Simplify right side
    4,786.79x = 23,103,749.85
  5. Step 5: Solve for x
    x = 23,103,749.85/4,786.79
  6. Step 6: Final answer
    x = 4,826.56

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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.