In [16]: x
Out[16]:
array([[ 1.2061934 ,  0.78132208],
       [ 0.14763367, -0.47647038],
       [ 0.37784154,  1.13200053],
       [ 1.58888898, -1.84890062]])

In [17]: s
Out[17]:
0    1.206193
1    0.781322
dtype: float64

In [18]: x * s.values
Out[18]:
array([[ 1.45490252,  0.61046419],
       [ 0.17807476, -0.37227683],
       [ 0.45574998,  0.88445701],
       [ 1.9165074 , -1.44458687]])

In [19]: x * s
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-19-b699db99ec8b> in <module>
----> 1 x * s

~/miniconda3/envs/pandas-0.23.4/lib/python3.6/site-packages/pandas/core/ops.py in wrapper(left, right)
   1069         result = safe_na_op(lvalues, rvalues)
   1070         return construct_result(left, result,
-> 1071                                 index=left.index, name=res_name, dtype=None)
   1072
   1073     return wrapper

~/miniconda3/envs/pandas-0.23.4/lib/python3.6/site-packages/pandas/core/ops.py in _construct_result(left, result, index, name, dtype)
    978     not be enough; we still need to override the name attribute.
    979     """
--> 980     out = left._constructor(result, index=index, dtype=dtype)
    981
    982     out.name = name

~/miniconda3/envs/pandas-0.23.4/lib/python3.6/site-packages/pandas/core/series.py in __init__(self, data, index, dtype, name, copy, fastpath)
    260                             'Length of passed values is {val}, '
    261                             'index implies {ind}'
--> 262                             .format(val=len(data), ind=len(index)))
    263                 except TypeError:
    264                     pass

ValueError: Length of passed values is 4, index implies 2