You want to get a photo enlarged. The original was 3 inches wide and 5 inches long. The new photo is 20 inches long, how wide is the photo?
Solve the proportion.
3/5 = x/20
A photo with a length of 3 inches and a width of 5 inches is enlarged to poster size. The poster and the photo are similar. The length of the poster is 21 inches. What is the width of the poster?
To find the width of the enlarged photo, we can use the concept of proportions.
First, let's set up a proportion between the dimensions of the original photo and the dimensions of the enlarged photo:
(original width) / (original length) = (enlarged width) / (enlarged length)
Plugging in the given values, we have:
3 inches / 5 inches = (enlarged width) / 20 inches
Now, we can solve for the unknown variable, which is the width of the enlarged photo. We can cross-multiply and solve for (enlarged width):
3 inches * 20 inches = 5 inches * (enlarged width)
60 inches = 5 inches * (enlarged width)
Next, we can isolate (enlarged width) by dividing both sides of the equation by 5 inches:
(enlarged width) = 60 inches / 5 inches
(enlarged width) = 12 inches
Therefore, the width of the enlarged photo is 12 inches.
3/5=x/20
3(20)=x(5)
60=5x
5x/5=60/5
x=12