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If 3k - 2, 4k - 6 and k + 2 are three co...

If 3k - 2, 4k - 6 and k + 2 are three consecutive terms of A.P., then find the value of k.

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To solve the problem, we need to find the value of \( k \) such that the terms \( 3k - 2 \), \( 4k - 6 \), and \( k + 2 \) are in Arithmetic Progression (A.P.). ### Step-by-Step Solution: 1. **Identify the Terms**: The three terms are: - First term: \( a_1 = 3k - 2 \) - Second term: \( a_2 = 4k - 6 \) - Third term: \( a_3 = k + 2 \) 2. **Use the Property of A.P.**: For three terms to be in A.P., the difference between the first and second terms must equal the difference between the second and third terms: \[ a_2 - a_1 = a_3 - a_2 \] 3. **Set Up the Equation**: Substitute the terms into the equation: \[ (4k - 6) - (3k - 2) = (k + 2) - (4k - 6) \] 4. **Simplify the Left Side**: \[ 4k - 6 - 3k + 2 = k - 4 \] This simplifies to: \[ k - 4 \] 5. **Simplify the Right Side**: \[ k + 2 - 4k + 6 = -3k + 8 \] 6. **Set the Two Sides Equal**: Now we have: \[ k - 4 = -3k + 8 \] 7. **Solve for \( k \)**: Add \( 3k \) to both sides: \[ k + 3k - 4 = 8 \] This simplifies to: \[ 4k - 4 = 8 \] Now add \( 4 \) to both sides: \[ 4k = 12 \] Finally, divide by \( 4 \): \[ k = 3 \] ### Final Answer: The value of \( k \) is \( 3 \).
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