19/6 = 4/27 . which method did you use to determine whether this proportion is true or false? Choose the correct answer:
A) true
B) neutral
C) false
D) not sure
E) none
19/6= 4/27. cross multiplication:   19 * 27= 
<gadget id="calculator">  19 * 27</gadget>
<output>513</output>
513, 6 * 4= 24,   we see that 513 are not equal to 24. so there is no proportion. corrcet answer: (false)
<result>C</result>
19/6 = 4/27 . which method did you use to determine whether this proportion is true or false?