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Finding the Fourth Proportional to 8,454.87, 11,668.41 and 4,917.87

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Solution

The fourth proportional to 8,454.87, 11,668.41 and 4,917.87 is: 6,787.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.87 : 11,668.41 = 4,917.87 : x
  2. Step 2: Convert to fraction form
    8,454.87/11,668.41 = 4,917.87/x
  3. Step 3: Cross multiply
    8,454.87x = 11,668.41 × 4,917.87
  4. Step 4: Simplify right side
    8,454.87x = 57,383,723.49
  5. Step 5: Solve for x
    x = 57,383,723.49/8,454.87
  6. Step 6: Final answer
    x = 6,787.06

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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.