Explanation:

- The absence of a specific agreement on sharing ratios among partners defaults to a standard principle in partnership law.

- Option 1: In the ratio of the capital of partners - Not applicable unless specified in the agreement.

- Option 2: Equally - Correct. Without a specified agreement, the profits and losses are shared equally among partners, according to standard partnership rules.

- Option 3: In the ratio of loans given by them to the partnership firm - Loans are separate obligations and don't affect profit-sharing ratios.

- Option 4: In the ratio of the initial capital introduced by the partners - Not the default rule; it requires explicit agreement.