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Finding the Fourth Proportional to 8,608.50, 12,900.63 and 6,845.69

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Solution

The fourth proportional to 8,608.50, 12,900.63 and 6,845.69 is: 10,258.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.50 : 12,900.63 = 6,845.69 : x
  2. Step 2: Convert to fraction form
    8,608.50/12,900.63 = 6,845.69/x
  3. Step 3: Cross multiply
    8,608.50x = 12,900.63 × 6,845.69
  4. Step 4: Simplify right side
    8,608.50x = 88,313,649.28
  5. Step 5: Solve for x
    x = 88,313,649.28/8,608.50
  6. Step 6: Final answer
    x = 10,258.89

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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.