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Finding the Fourth Proportional to 8,125.72, 12,189.02 and 2,579.49

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Solution

The fourth proportional to 8,125.72, 12,189.02 and 2,579.49 is: 3,869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.72 : 12,189.02 = 2,579.49 : x
  2. Step 2: Convert to fraction form
    8,125.72/12,189.02 = 2,579.49/x
  3. Step 3: Cross multiply
    8,125.72x = 12,189.02 × 2,579.49
  4. Step 4: Simplify right side
    8,125.72x = 31,441,455.20
  5. Step 5: Solve for x
    x = 31,441,455.20/8,125.72
  6. Step 6: Final answer
    x = 3,869.37

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1.5x scale

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.