Student grade prelim midterm and finals computation

package studentgrade;

import java.util.Scanner;
public class StudentGrade {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
            Scanner input = new Scanner(System.in);

        System.out.print("Enter Prelim Grade: ");
        double prelim = input.nextDouble();

        System.out.print("Enter Midterm Grade: ");
        double midterm = input.nextDouble();

        System.out.print("Enter Final Grade: ");
        double finalGrade = input.nextDouble();

        double subjectGrade = (prelim + midterm + (finalGrade * 2)) / 4;

        String gradeEquivalent;
        if (subjectGrade >= 96) {
            gradeEquivalent = "1.00";
        } else if (subjectGrade >= 94) {
            gradeEquivalent = "1.25";
        } else if (subjectGrade >= 92) {
            gradeEquivalent = "1.50";
        } else if (subjectGrade >= 89) {
            gradeEquivalent = "1.75";
        } else if (subjectGrade >= 87) {
            gradeEquivalent = "2.00";
        } else if (subjectGrade >= 84) {
            gradeEquivalent = "2.25";
        } else if (subjectGrade >= 80) {
            gradeEquivalent = "2.50";
        } else if (subjectGrade >= 78) {
            gradeEquivalent = "2.75";
        } else if (subjectGrade >= 75) {
            gradeEquivalent = "3.00";
        } else {
            gradeEquivalent = "5.00";
        }

        System.out.println("Subject Grade: " + subjectGrade);
        System.out.println("Grade Equivalent: " + gradeEquivalent);
    }
}