Home / 8,138.18-12,202.95-5,541.86

Finding the Fourth Proportional to 8,138.18, 12,202.95 and 5,541.86

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Solution

The fourth proportional to 8,138.18, 12,202.95 and 5,541.86 is: 8,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.18 : 12,202.95 = 5,541.86 : x
  2. Step 2: Convert to fraction form
    8,138.18/12,202.95 = 5,541.86/x
  3. Step 3: Cross multiply
    8,138.18x = 12,202.95 × 5,541.86
  4. Step 4: Simplify right side
    8,138.18x = 67,627,040.49
  5. Step 5: Solve for x
    x = 67,627,040.49/8,138.18
  6. Step 6: Final answer
    x = 8,309.85

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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.