Using a proportional scale involves aligning known measurements on the scale to determine corresponding measurements for a different size, often used for scaling artwork or designs.
Here's a breakdown of how to use a proportional scale, based on the provided video excerpt:
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Identify your known measurements: Determine the dimensions of your original image or object. For example, you might have a 7-inch by 15-inch image.
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Determine your desired measurement: Decide on the dimension of your larger or smaller version. For instance, you want one dimension of your new painting to be 20 inches.
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Align the known measurements on the proportional scale: Find the marks on the scale that correspond to your known measurements (e.g., 7 and 15). Line these up according to the scale's instructions.
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Find the corresponding measurement: Once your known measurements are aligned, locate the mark on the scale that corresponds to your desired dimension (e.g., 20). Read the value that aligns with it on the scale. This value represents the other dimension of your scaled image. In the example, a 7x15 image scaled to a 20-inch height would have a width of approximately 42 inches.
In essence, a proportional scale helps you maintain the same ratios between dimensions when resizing an image or object, ensuring that the scaled version is proportionally accurate.
