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Finding the Fourth Proportional to 7,142.15, 10,712.01 and 1,946.81

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Solution

The fourth proportional to 7,142.15, 10,712.01 and 1,946.81 is: 2,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.15 : 10,712.01 = 1,946.81 : x
  2. Step 2: Convert to fraction form
    7,142.15/10,712.01 = 1,946.81/x
  3. Step 3: Cross multiply
    7,142.15x = 10,712.01 × 1,946.81
  4. Step 4: Simplify right side
    7,142.15x = 20,854,248.19
  5. Step 5: Solve for x
    x = 20,854,248.19/7,142.15
  6. Step 6: Final answer
    x = 2,919.88

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