Home / 8,104.32-12,121.92-4,976.64

Finding the Fourth Proportional to 8,104.32, 12,121.92 and 4,976.64

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Solution

The fourth proportional to 8,104.32, 12,121.92 and 4,976.64 is: 7,443.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,104.32 : 12,121.92 = 4,976.64 : x
  2. Step 2: Convert to fraction form
    8,104.32/12,121.92 = 4,976.64/x
  3. Step 3: Cross multiply
    8,104.32x = 12,121.92 × 4,976.64
  4. Step 4: Simplify right side
    8,104.32x = 60,326,431.95
  5. Step 5: Solve for x
    x = 60,326,431.95/8,104.32
  6. Step 6: Final answer
    x = 7,443.74

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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.