How can I generalize this for loop?

My question is easy. How can I generalize this for loop?

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for i=1:r

    t(1)=(d(1))/total
    t(2)=(d(2)+d(1))/total
    t(3)=(d(3)+d(2)+d(1))/total
    t(4)=(d(4)+d(3)+d(2)+d(1))/total
      .
      .
      .
end
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Answer 1

[Iain]

Whats wrong with?

 t = cumsum(d)/total;

Answer 2

[Thomas]

a=1:9  % input

for  ii=1:9
t(ii)=sum(a(1:ii))/sum(a);
end

t

Answer 3

[Chandrasekhar]

sum = 0;  
for I = 1:r
sum = sum + d(I);
t(i) = sum/total;
end