The official ratio of width to length for the U.S. flag is 10 to 19. If a flag is 38 inches wide, how long should it be?
Let x = length.
Do ratio & proportion:
10 / 19 = 38 / x
Cross-multiplying,
10x = 19 * 38
10x = 722
(10/10)x = 722/10
x = 72.2 in
Hope this helps :3
To find the length of the flag, we need to use the given ratio of width to length, which is 10 to 19.
Step 1: Write down the ratio in fraction form.
The ratio of width to length is 10 to 19, so it can be written as 10/19.
Step 2: Set up a proportion.
Since we know the width of the flag is 38 inches and we are trying to find the length, we can set up a proportion using the width and length:
10/19 = 38/x
Step 3: Cross multiply and solve for x.
To solve for x, we cross multiply the fractions:
10 * x = 19 * 38
Step 4: Simplify and calculate x.
Next, we simplify the equation by multiplying the numbers on each side:
10x = 722
Finally, we isolate x by dividing both sides of the equation by 10:
x = 722/10
Therefore, the length of the flag should be approximately 72.2 inches.