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Finding the Fourth Proportional to 8,564.93, 12,847.21 and 3,947.93

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Solution

The fourth proportional to 8,564.93, 12,847.21 and 3,947.93 is: 5,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,564.93 : 12,847.21 = 3,947.93 : x
  2. Step 2: Convert to fraction form
    8,564.93/12,847.21 = 3,947.93/x
  3. Step 3: Cross multiply
    8,564.93x = 12,847.21 × 3,947.93
  4. Step 4: Simplify right side
    8,564.93x = 50,719,801.80
  5. Step 5: Solve for x
    x = 50,719,801.80/8,564.93
  6. Step 6: Final answer
    x = 5,921.80

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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.