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Finding the Fourth Proportional to 12,719.32, 19,079 and 3,954.24

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Solution

The fourth proportional to 12,719.32, 19,079 and 3,954.24 is: 5,931.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.32 : 19,079 = 3,954.24 : x
  2. Step 2: Convert to fraction form
    12,719.32/19,079 = 3,954.24/x
  3. Step 3: Cross multiply
    12,719.32x = 19,079 × 3,954.24
  4. Step 4: Simplify right side
    12,719.32x = 75,442,944.96
  5. Step 5: Solve for x
    x = 75,442,944.96/12,719.32
  6. Step 6: Final answer
    x = 5,931.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.