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Finding the Fourth Proportional to 8,719.44, 12,997.02 and 8,019.60

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Solution

The fourth proportional to 8,719.44, 12,997.02 and 8,019.60 is: 11,953.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.44 : 12,997.02 = 8,019.60 : x
  2. Step 2: Convert to fraction form
    8,719.44/12,997.02 = 8,019.60/x
  3. Step 3: Cross multiply
    8,719.44x = 12,997.02 × 8,019.60
  4. Step 4: Simplify right side
    8,719.44x = 104,230,901.59
  5. Step 5: Solve for x
    x = 104,230,901.59/8,719.44
  6. Step 6: Final answer
    x = 11,953.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.