You are here

Proof Without Words: \(1/4 + (1/4)^2 + (1/4)^3 + \ldots = 1/3\)

by Rick Mabry (Louisiana State University in Shreveport)

This article originally appeared in:
Mathematics Magazine
February, 1999

Subject classification(s): Geometric Sequence
Applicable Course(s): 3.2 Mainstream Calculus II | 3.7 Discrete Math | 4.1 Introduction to Proofs

Visual proof of a geometric series identity

A pdf copy of the article can be viewed by clicking below. Since the copy is a faithful reproduction of the actual journal pages, the article may not begin at the top of the first page.

To open this file please click here.

These pdf files are furnished by JSTOR.

Classroom Capsules would not be possible without the contribution of JSTOR.

JSTOR provides online access to pdf copies of 512 journals, including all three print journals of the Mathematical Association of America: The American Mathematical Monthly, College Mathematics Journal, and Mathematics Magazine. We are grateful for JSTOR's cooperation in providing the pdf pages that we are using for Classroom Capsules.

Capsule Course Topic(s):
Sequences and Series | Special Series: Geometric Series
Average: 3 (76 votes)