Home / 8,656.35-12,976.73-3,108.39

Finding the Fourth Proportional to 8,656.35, 12,976.73 and 3,108.39

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Solution

The fourth proportional to 8,656.35, 12,976.73 and 3,108.39 is: 4,659.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.35 : 12,976.73 = 3,108.39 : x
  2. Step 2: Convert to fraction form
    8,656.35/12,976.73 = 3,108.39/x
  3. Step 3: Cross multiply
    8,656.35x = 12,976.73 × 3,108.39
  4. Step 4: Simplify right side
    8,656.35x = 40,336,737.76
  5. Step 5: Solve for x
    x = 40,336,737.76/8,656.35
  6. Step 6: Final answer
    x = 4,659.79

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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.