What is the fraction to this picture?
1 answer:
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Answer:
The model swing should be <u>2.75 cm</u> high.
Step-by-step explanation:
Given:
A 168-cm tall person is 2 cm in Ming’s model.
If the actual swing is 231 cm high.
Now, to find how high should his model swing be.
Let the model swing be
So, 168 cm tall person is equivalent to 2 cm.
Thus, 231 cm actual swing is equivalent to model swing.
Now, we get the height of the swing in the model by using cross multiplication method:
<em>By cross multiplication:</em>
⇒
<em>Dividing both sides by 168 we get:</em>
⇒
Therefore, the model swing should be 2.75 cm high.
There are special properties to certain right triangles.
A 3-4-5 triangle will always be a right triangle. 9 divides into 3, and 15 divides into 5, so you can use ratios to find b.
Since 9 divides into 3, we will use this to set up proportions for the missing value:
Cross multiply the fractions.
Divide both sides by 3.
The missing value is 12.
A 3-4-5 triangle will always be a right triangle. 9 divides into 3, and 15 divides into 5, so you can use ratios to find b.
Since 9 divides into 3, we will use this to set up proportions for the missing value:
Cross multiply the fractions.
Divide both sides by 3.
The missing value is 12.