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Finding the Fourth Proportional to 8,667.81, 13,005.36 and 4,508.87

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Solution

The fourth proportional to 8,667.81, 13,005.36 and 4,508.87 is: 6,765.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.81 : 13,005.36 = 4,508.87 : x
  2. Step 2: Convert to fraction form
    8,667.81/13,005.36 = 4,508.87/x
  3. Step 3: Cross multiply
    8,667.81x = 13,005.36 × 4,508.87
  4. Step 4: Simplify right side
    8,667.81x = 58,639,412.52
  5. Step 5: Solve for x
    x = 58,639,412.52/8,667.81
  6. Step 6: Final answer
    x = 6,765.19

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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.