Midway through a six-month project, the project manager notices that the team has completed 40 percent of the planned work but has consumed 60 percent of the budget. The sponsor asks for a forecast of the total cost at completion based on current performance. Which earned value metric should the project manager use to answer this question?
EAC forecasts the total expected cost of the project when all work is finished. Because the sponsor asked for the projected total cost based on current performance, EAC is the appropriate metric, commonly calculated as budget at completion divided by cost performance index when current variances are expected to persist.
Why this answer
Estimate at completion forecasts the total cost of the project upon completion. Given that the team has consumed more budget than work completed, the sponsor needs a revised total, which EAC provides. Cost variance, SPI, and estimate to complete each describe only part of the picture and cannot alone answer a total-cost-at-completion question.
Exam trap
The trap here is reaching for a variance or index metric when the sponsor specifically asked for a projected total cost at completion, which is estimate at completion.