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A configuration whose density profile coincides with the Newtonian potentialfor spiral galaxies is constructed from a 4D isotropic metric plus extradimensional components. A Miyamoto-Nagai ansatz is used to solve Einsteinequations. The stable rotation curves of such system are computed and, withoutfitting techniques, we recover with accuracy the observational data for flat ornot asymptotically flat galaxy rotation curves. The density profiles arereconstructed and compared to that obtained from the Newtonian potential.

Gravity with extra dimensions and dark matter interpretation: Phenomenological example via Miyamoto-Nagai galaxy