Weak Wort Addition (known final length)   Final length required Final gravity required Gravity strong wort Gravity weak wort Length weak wort required

Problem: how much weak wort is required (where final length is known)

Knowns: Final Length Required; Gravity Strong Wort, Gravity Weak Wort; Final Gravity Required

Constraints: 1-100000 for length; 1.0-120.0 for gravity. All fields must be filled. Units are irrelevant providing consistent.  

Parti-Gyles Weak Wort Strong Wort Proportions