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Tutorial on Geometric Series Calculation


Instruction on how to use the calculator.

Step 1. Enter 3 in box n₃ Why? It is the third number in geometric series.

Step 2. Enter 2.93 the recorded value for third number

Step 3. Enter 6 in box n₆

Step 4. Enter 5.28 the recorded value for the sixth number. Select Solve button

Step 5. Enter 5 in box n_nth Why? Because you are asked to compute the expected value for the 5th term

Step 6. Now you can predict the last number at any position of the geometric series. How ? Enter any integer number in box n _nth to compute the expected value of the Last term, L nth term
For example n nth = 9
L nth = 9.5229

Step 7. Total number of geometric series up to the last number term or last position is calculated automatically.

a = r = n3 = L3 = a =

nnth = Lnth = Answer n6 = L6 = r =

Total Population _nth =

The Graph of Geometric Function y = a r ^n-1

Notice the equation is similar to the Last Term equation
L_n = a r ^n-1
Where:
a = first term = 1.979 ;
r = geometric ratio = 1.217
And n = number of series is represented by the x-axis
While L = last term value is represented by the y-axis.

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