ProportionsOf ?

Cross-multiplication or Means-Extremes Property of Proportions: In maths we say: The product of the means is equal to the product of the extremes: ∴ x:z = y:w => x.w = z.y This APP uses the Rule of Three to calculates the ratio between values. For example, you can calculate whether it's worth buying a promotional product like this one: "Buy 70gr of biscuit for €4.98 or 140gr for € 9.97". Would not it be more advantageous to buy 2 of 70g instead of 1 package of 140g? Well, you can draw your own conclusions using the app for a multitude of calculations. Basically, the entire world around your is a matters of proportions. The App also a great tool for children to get a notion of how they can calculate proportions using the rule of three to start to use on their daily-life. Available in Arabic, Bengali, Chinese, Dutch, English, French, German, Greek, Hebrew, Hindi, Irish, Italian, Japanese, Korean, Malay, Persian, Portuguese, Russian, Spanish, Turkish and Ukrainian. ∙ Terms & Conditions of Use: https://proportionsof.398031.xyz/legal.php?doc=term_and_conditions&l=en ∙ Privacy Policy: https://proportionsof.398031.xyz/legal.php?doc=privacypolicy&l=en ∙ Disclaimer: https://proportionsof.398031.xyz/legal.php?doc=disclaimer&l=en For more information, please visit the website: https://proportionsof.398031.xyz/?l=en