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Finding the Fourth Proportional to 8,608.25, 12,900.25 and 6,845.43

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Solution

The fourth proportional to 8,608.25, 12,900.25 and 6,845.43 is: 10,258.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.25 : 12,900.25 = 6,845.43 : x
  2. Step 2: Convert to fraction form
    8,608.25/12,900.25 = 6,845.43/x
  3. Step 3: Cross multiply
    8,608.25x = 12,900.25 × 6,845.43
  4. Step 4: Simplify right side
    8,608.25x = 88,307,758.36
  5. Step 5: Solve for x
    x = 88,307,758.36/8,608.25
  6. Step 6: Final answer
    x = 10,258.50

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1.5x scale

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.