Dan is making a model volcano for the science fair. He wants an awesome eruption, so he tries different amounts of baking soda and vinegar. First, he tries 2 tablespoons of baking soda and 6 tablespoons of vinegar. Next, he tries 3 tablespoons of baking soda and 9 tablespoons of vinegar. Did Dan use the same ratio of baking soda to vinegar in both eruptions?