Home / 8,125.37-12,187.95-2,578.56

Finding the Fourth Proportional to 8,125.37, 12,187.95 and 2,578.56

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Solution

The fourth proportional to 8,125.37, 12,187.95 and 2,578.56 is: 3,867.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.37 : 12,187.95 = 2,578.56 : x
  2. Step 2: Convert to fraction form
    8,125.37/12,187.95 = 2,578.56/x
  3. Step 3: Cross multiply
    8,125.37x = 12,187.95 × 2,578.56
  4. Step 4: Simplify right side
    8,125.37x = 31,427,360.35
  5. Step 5: Solve for x
    x = 31,427,360.35/8,125.37
  6. Step 6: Final answer
    x = 3,867.81

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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.