Home / 8,125.24-12,187.92-2,578.60

Finding the Fourth Proportional to 8,125.24, 12,187.92 and 2,578.60

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Solution

The fourth proportional to 8,125.24, 12,187.92 and 2,578.60 is: 3,867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.24 : 12,187.92 = 2,578.60 : x
  2. Step 2: Convert to fraction form
    8,125.24/12,187.92 = 2,578.60/x
  3. Step 3: Cross multiply
    8,125.24x = 12,187.92 × 2,578.60
  4. Step 4: Simplify right side
    8,125.24x = 31,427,770.51
  5. Step 5: Solve for x
    x = 31,427,770.51/8,125.24
  6. Step 6: Final answer
    x = 3,867.92

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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.