Home / 8,127.37-12,189.81-2,579.99

Finding the Fourth Proportional to 8,127.37, 12,189.81 and 2,579.99

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Solution

The fourth proportional to 8,127.37, 12,189.81 and 2,579.99 is: 3,869.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.37 : 12,189.81 = 2,579.99 : x
  2. Step 2: Convert to fraction form
    8,127.37/12,189.81 = 2,579.99/x
  3. Step 3: Cross multiply
    8,127.37x = 12,189.81 × 2,579.99
  4. Step 4: Simplify right side
    8,127.37x = 31,449,608.70
  5. Step 5: Solve for x
    x = 31,449,608.70/8,127.37
  6. Step 6: Final answer
    x = 3,869.59

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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.