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Finding the Fourth Proportional to 8,063.64, 12,063.87 and 7,128.63

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Solution

The fourth proportional to 8,063.64, 12,063.87 and 7,128.63 is: 10,665.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,063.64 : 12,063.87 = 7,128.63 : x
  2. Step 2: Convert to fraction form
    8,063.64/12,063.87 = 7,128.63/x
  3. Step 3: Cross multiply
    8,063.64x = 12,063.87 × 7,128.63
  4. Step 4: Simplify right side
    8,063.64x = 85,998,865.60
  5. Step 5: Solve for x
    x = 85,998,865.60/8,063.64
  6. Step 6: Final answer
    x = 10,665.02

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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.