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Finding the Fourth Proportional to 8,640.96, 12,960.09 and 3,094.17

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Solution

The fourth proportional to 8,640.96, 12,960.09 and 3,094.17 is: 4,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.96 : 12,960.09 = 3,094.17 : x
  2. Step 2: Convert to fraction form
    8,640.96/12,960.09 = 3,094.17/x
  3. Step 3: Cross multiply
    8,640.96x = 12,960.09 × 3,094.17
  4. Step 4: Simplify right side
    8,640.96x = 40,100,721.68
  5. Step 5: Solve for x
    x = 40,100,721.68/8,640.96
  6. Step 6: Final answer
    x = 4,640.77

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1.5x scale

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.