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Finding the Fourth Proportional to 8,664.51, 11,960.09 and 5,127.71

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Solution

The fourth proportional to 8,664.51, 11,960.09 and 5,127.71 is: 7,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.51 : 11,960.09 = 5,127.71 : x
  2. Step 2: Convert to fraction form
    8,664.51/11,960.09 = 5,127.71/x
  3. Step 3: Cross multiply
    8,664.51x = 11,960.09 × 5,127.71
  4. Step 4: Simplify right side
    8,664.51x = 61,327,787.65
  5. Step 5: Solve for x
    x = 61,327,787.65/8,664.51
  6. Step 6: Final answer
    x = 7,078.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.