A salad dressing recipe uses 12 parts oil, 3 parts vinegar, and 2 parts honey. Which of the following sets of ingredients are in a proportional relationship with the recipe? Select all that apply.

1. 9 Tbsp oil, 2 Tbsp vinegar, 1.5 Tbsp honey
2. 6 Tbsp oil, 1.5 Tbsp vinegar, 1 Tbsp honey
3. 15 Tbsp oil, 4 Tbsp vinegar, 3 Tbsp honey
4. 18 Tbsp oil, 4.5 Tbsp vinegar, 3 Tbsp honey
5. 24 Tbsp oil, 6 Tbsp vinegar, 4 Tbsp honey

Please provide an explanation for how you determined your answer.