Home / 8,721.72-13,074.40-3,173.68

Finding the Fourth Proportional to 8,721.72, 13,074.40 and 3,173.68

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Solution

The fourth proportional to 8,721.72, 13,074.40 and 3,173.68 is: 4,757.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.72 : 13,074.40 = 3,173.68 : x
  2. Step 2: Convert to fraction form
    8,721.72/13,074.40 = 3,173.68/x
  3. Step 3: Cross multiply
    8,721.72x = 13,074.40 × 3,173.68
  4. Step 4: Simplify right side
    8,721.72x = 41,493,961.79
  5. Step 5: Solve for x
    x = 41,493,961.79/8,721.72
  6. Step 6: Final answer
    x = 4,757.54

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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.