Home / 8,147.19-12,211.32-3,755.40

Finding the Fourth Proportional to 8,147.19, 12,211.32 and 3,755.40

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Solution

The fourth proportional to 8,147.19, 12,211.32 and 3,755.40 is: 5,628.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.19 : 12,211.32 = 3,755.40 : x
  2. Step 2: Convert to fraction form
    8,147.19/12,211.32 = 3,755.40/x
  3. Step 3: Cross multiply
    8,147.19x = 12,211.32 × 3,755.40
  4. Step 4: Simplify right side
    8,147.19x = 45,858,391.13
  5. Step 5: Solve for x
    x = 45,858,391.13/8,147.19
  6. Step 6: Final answer
    x = 5,628.74

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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.