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5/11, 3/7, 4/9, 13/30, 17/39 if these fractions are arranged from least to greatest, which will be the third?

 Dec 10, 2014

Best Answer 

 #4
avatar+26400 
+5

5/11, 3/7, 4/9, 13/30, 17/39 if these fractions are arranged from least to greatest, which will be the third  ?  

I.  decimal: $$\small{\text{
1. $ \frac{ 3 }{ 7 } = 0.429 \quad $
2. $ \frac{13}{30 } = 0.4\overline{3} \quad $
3. $ \frac{17}{39} = 0.4359 \quad $
4. $ \frac{4}{9 } = 0.\overline{4} \quad $
5. $ \frac{ 5}{11} = 0.\overline{45} \quad $
}}$$

II. fraction:

$$\small{\text{
1. $ \frac{ 3 }{ 7 } = \frac{38619}{90090} \quad $
2. $ \frac{13}{30 } = \frac{39039}{90090} \quad $
3. $ \frac{17}{39} = \frac{39270}{90090} \quad $
4. $ \frac{4}{9 } = \frac{40040}{90090} \quad $
5. $ \frac{ 5}{11} = \frac{40950}{90090} $
}}$$

 Dec 10, 2014
 #1
avatar+118723 
+5

Well there are different methods

They are all quite close in value and all less than a half.

It is probably easiest to change them into decimals using a calculator and then compare the decimal answers.

 Dec 10, 2014
 #2
avatar+26400 
+5

5/11, 3/7, 4/9, 13/30, 17/39

$$\frac{ 3 }{ 7 } < \frac{13}{30 } < \frac{17}{39} < \frac{4}{9 } < \frac{ 5}{11}$$

17/39 will be the third

 Dec 10, 2014
 #3
avatar+118723 
0

Yes Heueka but how do you suggest anon derives this order?

 Dec 10, 2014
 #4
avatar+26400 
+5
Best Answer

5/11, 3/7, 4/9, 13/30, 17/39 if these fractions are arranged from least to greatest, which will be the third  ?  

I.  decimal: $$\small{\text{
1. $ \frac{ 3 }{ 7 } = 0.429 \quad $
2. $ \frac{13}{30 } = 0.4\overline{3} \quad $
3. $ \frac{17}{39} = 0.4359 \quad $
4. $ \frac{4}{9 } = 0.\overline{4} \quad $
5. $ \frac{ 5}{11} = 0.\overline{45} \quad $
}}$$

II. fraction:

$$\small{\text{
1. $ \frac{ 3 }{ 7 } = \frac{38619}{90090} \quad $
2. $ \frac{13}{30 } = \frac{39039}{90090} \quad $
3. $ \frac{17}{39} = \frac{39270}{90090} \quad $
4. $ \frac{4}{9 } = \frac{40040}{90090} \quad $
5. $ \frac{ 5}{11} = \frac{40950}{90090} $
}}$$

heureka Dec 10, 2014

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