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Finding the Fourth Proportional to 8,667.36, 11,957.99 and 4,890.06

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Solution

The fourth proportional to 8,667.36, 11,957.99 and 4,890.06 is: 6,746.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.36 : 11,957.99 = 4,890.06 : x
  2. Step 2: Convert to fraction form
    8,667.36/11,957.99 = 4,890.06/x
  3. Step 3: Cross multiply
    8,667.36x = 11,957.99 × 4,890.06
  4. Step 4: Simplify right side
    8,667.36x = 58,475,264.13
  5. Step 5: Solve for x
    x = 58,475,264.13/8,667.36
  6. Step 6: Final answer
    x = 6,746.61

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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.