Home / 8,125.41-12,189.66-2,580.15

Finding the Fourth Proportional to 8,125.41, 12,189.66 and 2,580.15

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Solution

The fourth proportional to 8,125.41, 12,189.66 and 2,580.15 is: 3,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.41 : 12,189.66 = 2,580.15 : x
  2. Step 2: Convert to fraction form
    8,125.41/12,189.66 = 2,580.15/x
  3. Step 3: Cross multiply
    8,125.41x = 12,189.66 × 2,580.15
  4. Step 4: Simplify right side
    8,125.41x = 31,451,187.28
  5. Step 5: Solve for x
    x = 31,451,187.28/8,125.41
  6. Step 6: Final answer
    x = 3,870.72

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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.