CHAPMAN AND CUTLER LLP                                   111 WEST MONROE STREET
                                                        CHICAGO, ILLINOIS 60603


                                 July 6, 2012


Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549


         Re:          First Trust Exchange-Traded Fund IV
                   (Registration Nos. 333-174332, 811-22559)
                 ---------------------------------------------


Ladies and Gentlemen:

      On behalf of First Trust Exchange-Traded Fund IV (the "Registrant"), we
are transmitting for electronic filing pursuant to Rule 497(e) under the
Securities Act of 1933, as amended, the exhibits containing interactive data
format risk/return summary information that mirrors the risk/return summary
information in the form of Prospectus for the Registrant filed pursuant to Rule
497(c) on June 21, 2012. The Registration Statement relates to First Trust North
American Energy Infrastructure Fund, a series of the Registrant.

      If you have any questions or comments, please telephone the undersigned at
(312) 845-3484.

                                       Very truly yours,

                                       CHAPMAN AND CUTLER LLP


                                       By: /s/ Morrison C. Warren
                                           -----------------------------
                                               Morrison C. Warren

Enclosures