# Ratio and Proportion with Medications: In a Nutshell (Nursing)

by Rhonda Lawes

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Slides Nursing Dosage Calculation Ratio Proportion Medications.pdf
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Cheat Sheet Understanding Ratios.pdf
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00:00 Okay. So, here's the key points to wrap up this portion of the video.

00:04 Proportions represent two ratios or fractions that are equal.

00:09 So in order for them to be a proportion, they have to be equal.

00:12 Proportions are solved by multiplying the means times the extreme.

00:17 As when we did the cross multiplication.

00:19 Always, always, always double check your work.

00:23 None of us want to be responsible for taking a shortcut and having a patient be harmed.

00:28 Place the "have" fraction on the left and the "ordered" fraction on the right.

00:33 Remember the "have" is the known ratio. The "ordered" is the unknown ratio.

00:39 Now, make sure the units match and they're in the same sequence before you cross multiply.

00:44 Thank you for watching our video series today.

The lecture Ratio and Proportion with Medications: In a Nutshell (Nursing) by Rhonda Lawes is from the course Dosage Calculation (Nursing).

### Included Quiz Questions

1. Always multiply means with extremes.
2. The units should match before cross multiplying.
3. The work should be double-checked.
4. The "have" fraction is placed on the right.
5. The two ratios used should be unequal.

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