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Finding the Fourth Proportional to 8,628.87, 11,893.50 and 6,107.74

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Solution

The fourth proportional to 8,628.87, 11,893.50 and 6,107.74 is: 8,418.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.87 : 11,893.50 = 6,107.74 : x
  2. Step 2: Convert to fraction form
    8,628.87/11,893.50 = 6,107.74/x
  3. Step 3: Cross multiply
    8,628.87x = 11,893.50 × 6,107.74
  4. Step 4: Simplify right side
    8,628.87x = 72,642,375.15
  5. Step 5: Solve for x
    x = 72,642,375.15/8,628.87
  6. Step 6: Final answer
    x = 8,418.53

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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.